It用法练习题及答案
It的用法
一．单项选择
1.It was at the gate ____ he told me the news.
A. that
B. what
C. which
D. when
2.Is ____necessary to tell his father everything
A. it
B. that
C. what
D. he
3.Was it in this palace ____ the last emperor died?
A. that
B. in which
C. in where
D. which
4.Is ____ possible to fly to the moon in a spaceship?
A. now
B. man
C. that
D. it
5.Was it during the Second World War ____he died?
A. that
B. while
C. in which
D. then
6.Is ____necessary to complete the design before National Day?
A. this
B. that
C. it
D. he
7.I don't think ____possible to master a foreign language without much memory work.
A. this
B. that
C. its
D. it
8.Does ____matter if he can't finish the job on time?
A. this
B. that
C. he
D. it
9.It was not ____she took off her dark glasses ____ ,I realized she was a famous film star.
A. when; that
B. until; that
C. until; when
D. when; then
10.Tom‘s mother kept telling him that he should work harder, but ____didn’t help.
A. he
B. which
C. she
D. it
11.____is a fact that English is being accepted as an international language.
A. There
B. This
C. That
D. It
12. Is ________ possible to fly to the moon in a spaceship?
A．now B．man C．that D．it
13．Our food and service are better than ________ used to be.
A．it B．we C．they D．them
14．________ appears to me ________ the report must be truth.
A．That; it B．It; that C．It; it D．That; that
15．He feels ________ duty to help others.
A．that he B．that his C．it he D．it his
16．Take ________ easy. The roads are icy.
A．it B．them C．us D．you
17．The TV sets made in China are much better than ________ in Japan.
A．that B．those C．them D．It
18．—— Have you found the bike you lost yesterday?
—— Yes, I've found ________ already.
A．it B．that C．the one D．that one
19.—— I'm looking for a flat.
—— Would you like ____ with ____ garden?
A．it; the B．it; a C．one; a D．one; the
20．________ was ________ who I met in the museum this morning.
A．It; him B．It; he C．That; he D. That; him
21．It was in the rice fields ________ we had our League meeting.
A．where B．that C．in which D．on which
22．________ you come to the party so late?
A．Why is it B．Why it is
C．Why it is that D．Why is it that
23．—— Were all three people in the car injured in the accident
—— No, ___ only the two passengers ___ got hurt．
A．they were; that B．there was; that
C．it was; who D．there are; who
24．I don' t think ________ possible to master a foreign language without much memory work .
A．this B．that C．its D．it
25．It was not ________ she took off her glasses ________ I realized she was a famous film star．
A. when; that
B. until; that
C. until; when
D. when; then
26.It was not until 1920 ____ regular radio broadcasts began.
A．while B．which C．that D．since
27．________ is a fact that English is being accepted as an international language. A．There B．This C．That D．It
28．It was about 600 years ago ________ the first clock with a face and an hour hand was made.
A．that B．until C．before D．when
29．It was only when I reread his poems recently ____ I began to appreciate their beauty. A．until B．that C．then D．So
30．I hate ______ when people talk with their mouths full.
A．it B．that C．these D．them
31．—— Why don't we take a little break? —— Didn't we just have ________ ? A．it B．that C．one D．this
32.Was it during the Second World War ____ he died？(MET88)
A．that B．While C．in which D．Then
33.Is ____ possible to fly to the moon in a spaceship？(MET88)
A．now B．that C．it D．Man
34.I don't think ___ possible to master a foreign language without much memory work．(MET90)
A．This B．that C．its D．It
35.___ is a fact that English is being accepted as an international language．(NMET95) A．There B．This C．That D．It
36.It was about 600 years ago ___ the first clock with face and an hour hand was made． (NMET97)
A．that B．until C．before D．when
37.____computers play such an important part in our daily life?
A．Why it is that B．Why is it that
C．Why was it that D．Why is it
38. Was it during the Second World War _____he died?
A. that
B. while
C. in which
D.then
39. Is ____ necessary to take off our shoes when we enter the lab?
A. everyone
B.this
C.her
D.it
40. Is ____ possible to fly to the moon in a spaceship?
A.now
B.that
C.it
D.man
41. I don’t t hink ___ possible to master a foreign language without much memory work.
A.this
B.that
C.its
D.it
42. She heard of a terrible noise, ___ brought her heart into her mouth.
A.it
B.which
C.this
D.that
43. Alice received an invitation from her boss, ____ came as a surprise.
A.it
B.that
C.which
D.he
44. Does ____ matter if he can’t finish the job on time?
A.this
B.that
C.he
D.it
45.Tom’s mother kept telling him that he should work harder, but____ didn’t help.
A.he
B.which
C.she
D.it
46.The weather turned out to be very good, ___ was more than we could expect.
A.what
B.which
C.that
D.it
47.____is a fact that English is being accepted as an international language.
A.There
B.This
C.That
D.It
48.I hope there are enough glasses for each guest to have _____.
A.it
B.those
C.them
D.one
49.It was about 600 years ago___the first clock with a face and an hour hand was made.
A.that
B.until
C.before
D.when
50.I hate ____ when people talk with their mouths full.
A.it
B.that
C.these
D.them
51.It was only when I reread his poems recently____ I began to appreciate their beauty.
A.until
B.that
C.then
D.so
52.It is the ability to do the job ____ matters not where you come from or what you are.
A.one
B.that
C.what
D.it
53.It ____ you that ____ to blame.
A.is;is
B.is; are
C.are;are
D.are;is
54.Was_____that I saw last night at the concert?
A.it you
B.not you
C.you
D.that you
55.____ electricity plays such an important part in our life?
A.Why is it that
B.Why is it
C.Why it is that
D.Why is that
56.It was ____ he said _____ disappointed me.
A.what;what
B.that;that
C.what;that
D.that;what
57.It was in the lab ___ was taken charge of by Professor Harris ___ they did the experiment.
A.which; that
B.that; what
C.whom; that
D.which; where
58.Many people now make a rule to buy cards for their friends before Christmas.
A.themselves
B.it
C.that
D.this
59.Someone is at the door, who is ?
A.this
B.that
C.it
D.he
60.—It is raining cats and dogs.
— .
A.So it is
B.So is it
C.Neither it is
D.Neither is it
二.分析it成分，辨清相似句型。
1.①_____ is well know to us all that the earth is round.
②____ is well known to us all, the earth is round.
A.That
B.As
C.It
D.Which
2. ①_____doesn’t matter much whether he’ll come to the party.
②I feel ____ an honour to be invited to speak here.
A.this
B.it
C.that
D.what
3. ①___ no wonder that he has passed the exam.
②___ no need for you to wait here.
A.There being
B.It was
C.It is
D.There is
4. ①Was it the house ____ Abraham Lincoln was born?
②Was it in the house ____ Abraham Lincoln was born?
A.that
B.where
C.which
D.both A and B
5. ① It’s very kind ____ you to help us.
② It’s very important _____ you to keep the balance of nature.
A.for
B.of
C.to Dwith .
6. ① It is no good ____ such a thing.
②It’s of no importance _____ such a thing.
A.do
B.to do
C.doing
D.done
7.①It's time that we ____ to school.
②It is the second time that we _____ to Beijing.
A.go
B.went
C.have been
D.have gone
8.①It's tomorrow ____ he is going to Beijing.
②It was 8 o'clock _____ he went to school.
A.that
B.when
C.before
D.since
9.①It is 3 years ____ he joined the army.
②It will be 3 years ____ we meet again.
A.before
B.after
C.since
D.when
答案：
一．单项选择
1-30 ABADA CDDBD DDCBD ABACA BDADB CDABA
31-60 CACDD AB ADC DBCDD BDDAA BBBAA CABCA
二.分析it成分，辨清相似句型。
21.CB 22.BB 23.CD 24.BA 25.BA 26.CB 27.BC 28.AB 29.CA
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英语语法专项：动名词用法讲解及练习(附答案)
你听过英文语法有动词(verb)、名词(noun)；但你听过有动名词(gerund)吗？ 1. The girl is singing a song. 2. The girl singing now is my sister. 3. Singing is one of her hobbies(爱好). 三个句子中都有singing。第一个句子的singing是常见的现在进行式(Present Continuous)，是说眼下正在做什么；第二个句子的singing是现在分词(Present Participle)，它把sing这个动词转为形容词，但仍有动词的成份（哈哈，这么一说，要把你搞晕了吧:-) 。关于分词，以后有空再谈OK？）。好戏在后头，你看看第三个句子的singing到底是什么东东呀？原来就是我们的主角动名词(Gerund)了！憧矗瑂ing原本是个动词，可是现在它加上ing后，看来竟像是一个名词了。 一、名词性的动名词(Nominal Gerund) Nominal Gerund 可以加上定冠词(Definite article，如the)或不定冠词(Indefinite article，如a, an)，其他可加在动名词前的还有如：my, this, some, any, all, no 等等。举例如下： 1. The mellow(愉快地) singing of the birds announces the coming of spring. (singing前加定冠词the及形容词mellow；coming 前加the) 2. We knew the robber was near when we heard a faint rustling(沙沙声) in the bushes. (rustling 前加不定冠词a及形容词faint) 从上面的例子可看出如何将一个动词转成名词；但它和真正的名词还是有区别的，那就是没有单数或复数之分。不过，有一些动名词是可以变成真正名词的喔，如：saying, writing, opening, painting, cutting, heading, feeling, being,saving, surrounding, crossing, misunderstanding 等等。它们都可以有复数的喔，方法就是在它们的后面加个s，如：paintings。 二、动词性的动名词(Verbal Gerund) 看看下面的句子： Carelessly writing essays annoys the teacher. 上面的句子里的writing是动名词，但前面有副词carelessly（粗心地），后面又有受词(Object) essays。因此writing就有动词的特征。 注意：Verbal Gerund 这类动名词的前面可不能加上任何冠词(the, a, an ...)喔。 动名词的功能与用法 一、在句子中用作主语(Subject)或主语的补语(Subject Complement): 1.1 作主语 1. Listening to music gives me pleasure. (主语Listening ） 2. Running is good exercise. （主语running) 3. Walking to school is a good idea. (主语walking) 1.2 作主语的补语 1. My cat's favorite activity is sleeping. (补语sleeping) 2. Seeing is believing. (主语seeing, 补语believing) 1.3 主语置于句尾 1.3.1 用It + be + ... +v-ing 句型 1. It is fun speaking English. 2. It is of great importance fighting against pollution(污染).
It作形式主语常见用法
It作形式主语常见句型 1.It + be +形容词+ that-从句 可用于此句型的形容词有: wonderful, true，good，right，wrong，（un）important，useless，surprising，disturbing,frightening,alarming,clear，unusual，lucky，certain, necessary等。如： ①It is quite certain that he will be at the meeting.他将出席会议是无疑的。 ②It is surprising that he came late to school this morning.他今天早上迟到真令人惊讶。 ③It is important that we (should) study hard.我们努力学习是很重要的。 注意: 该句型中的形容词是（un）important, necessary等时，从句应为(should )+动词原形。 It is important that we (should) learn English well. It is necessary that he (should) rember these words. 2.It + be +名词+ that-从句 适用该句型的名词（词组）有: a pity，an honor，a good thing，a fact，a surprise，a question,a shame,a custom, a truth,our hope, no wonder, good/bad manners等。如： ①It is a pity (that) you missed the sports meeting last week.你错过了上周的运动会太可惜了。 ②It is a fact that Engl ish is being accepted as an international language.事实上英语已经被作为一种国际语言而接受了。
C语言函数手册(DOC)
一、字符测试函数 isupper()测试字符是否为大写英文字 ispunct()测试字符是否为标点符号或特殊符号isspace()测试字符是否为空格字符 isprint()测试字符是否为可打印字符 islower()测试字符是否为小写字母 isgraphis()测试字符是否为可打印字符 isdigit()测试字符是否为阿拉伯数字 iscntrl()测试字符是否为ASCII码的控制字符isascii()测试字符是否为ASCII码字符 isalpha()测试字符是否为英文字母 isalnum()测试字符是否为英文或数字 isxdigit()测试字符是否为16进制数字 二、字符串操作函数 strtok()字符串分割函数 strstr()字符串查找函数 strspn()字符查找函数 strrchr()定位字符串中最后出现的指定字符 strpbrk()定位字符串中第一个出现的指定字符strncpy()复制字符串 strncat()字符串连接函数 strncasecmp()字符串比较函数(忽略大小写) strlen()字符串长度计算函数 strdup()复制字符串 strcspn()查找字符串 strcpy()复制字符串 strcoll()字符串比较函数(按字符排列次序) strcmp()字符串比较函数(比较字符串) strchr()字符串查找函数(返回首次出现字符的位置) strcat()连接字符串 strcasecmp()字符串比较函数(忽略大小写比较字符串) rindex()字符串查找函数(返回最后一次出现的位置) index()字符串查找函数(返回首次出现的位置) toupper()字符串转换函数(小写转大写) tolower()字符串转换函数(大写转小写) toascii()将整数转换成合法的ASCII码字符 strtoul()将字符串转换成无符号长整型数
it的用法归纳
?Never be afraid of grammar ?Collect some examples; ?Watch them very carefully; ?Find out something in common; ?Try to use the rules ---- practise. it用法完全归纳 一、it 作人称代词的用法 1.指事物 作为人称代词，it 可以除人以外的一切事物或动物。如： I dropped my watch and it broke. 我把手表掉在地上摔坏了。 It’s hard work, but I enjoy it. 工作很辛苦，可是我乐意干。 “Where is the dog?”“It’s in the bedroom. ”“狗在哪?”“在卧室里”。 2.指人 it 指人主要用于指不性别不明的婴儿或用于确认某人的身份。如： Is it a boy or a girl? 是男孩还是女孩? There is a knock on the door. It must be the postman. 有人在敲门，一定是邮递员。 【说明】在答语中，常用来指本人，如说It’s me。
3.代替某些代词 代词it 还可用于代替指示代词this, that 以及复合不定代词something, anything, nothing等。如： “What’s this?”“It’s a new machine. ”“这是什么?”“是一种新机器”。 Nothing is wrong, is it? 没出什么问题，是吗? 二、it 作非人称代词的用法 1.基本用法 it 作非人称代词的用法，主要用于指时间、距离、价值、天气、气候及温度等自然现象。如： It’s too late to go there now. 现在去那儿已经太迟了。 It rained all day yesterday. 昨天下了一天的雨。 It can get very hot here. 这里有时会很热。 2.用于某些句型 It’s time for sth. 该做某事了。 It’s time to do sth. 该做某事的时候了。 It’s time for sb to do sth. 某人该干某事了。 It’s (about / high) time + that-从句. 某人该做某事了。(从句谓语用过去式，有时也用“should+动词原形”) It’s first (second) time + that-从句. 某人第几次干某事。(从句谓语用现在完成时)
商务写作指南：超好记的appreciate的用法
WRONG: We would appreciate if you corrected the entry in the register as soon as possible. 错误用法：如果你能尽快更改登记处的入口，我将非常感激。 RIGHT: We would appreciate it if you corrected the entry in the register as soon as possible. 正确用法：如果你能尽快更改登记处的入口，我将非常感激（英语原句比前者多了一个it）。This is a very common mistake, and remember that when you use the phrase “I would appreciat e…”you MUST include the word “it”before “if”: 这是一个常见错误，记住当你要用“I would appreciate…”这个表达式时，一定要在if前加一个it。 More examples: 更多例子： E.g.1:I am sure the supervisory authority would not appreciate it if you took that course of action. 例1：我相信监督部门对你的所作所为不会表示欣赏。 E.g.2:We would appreciate it if you would arrange for immediate payment. 例2：如果您能立即付款，我们将很感激。 There is no need to add “it”if you do not include “if”. 如果你不用if从句的话，就没有必要在appreciate后面加it了。 E.g.: We would much appreciate a letter informing us of the result of your enquiries. 例句：如果您能对您的询盘结果给我们回信的话，我们将非常感激。 An alternative phrase to “I would appreciate it if…”is, “I would be grateful if…”This is the more formal phrase of the two and does not require that troublesome“it”! “I would appreciate it if…”这个表达式的替代用法有“I would be grateful if…”，但是这个用法更为正式，而且不需要加那个麻烦的“it”！
it用法及句型归纳
it用法及句型归纳 it为人称代词，主格与宾格同形。该词用法灵活，下面帮助同学们作以归纳。 一、可用来代替指示代词this或that。例如： —What's this/that? 这/那是什么？ —It's a ruler. 这/那是尺子。 二、表示时间、距离、天气、数字等。例如： 1. —What's the time?几点了？ —It's ten to ten. 九点五十。 2. —What's one plus two? 一加二等于几？ —It's three. 等于三。 三、用来代替前面提到的人或物。例如： This is my pen. Give it to me, please. 这是我的钢笔，请把它给我。 四、指心目中或上下文中所指的人或物。例如： 1. —Who's that over there? 那边的人是谁？ —Is it Bill? 是比尔吗？ 2. Miss Gao has a computer. It's new. 高老师有一台电脑，它是新的。 五、指身份不明、性别不详的人或者指照片中的人。例如： —What's the baby in the picture?照片中的那个婴儿是谁？ —It's me. 是我。 六、在电话用语中，可用it来指代对方或者自己。例如： —Hello! Who's it? 喂，你是哪位？ —It's Jim. 我是吉姆。
在初中英语教材中，出现了许多由it引导的固定句式，现归纳如下： 一、It's time for sb. to do sth. / It's time for sth.意为"是(某人)该干……的时间了"、"到……的时候了"。例如： 1. It's time for supper ／to have supper.该吃晚饭了。 2. It's time for me to study.我该学习了。 二、It takes(sb.)some time to do sth.意为"(某人)花……时间做某事"。例如： 1. It takes twenty minutes to go to school by bike. 骑自行车上学要花二十分钟的时间。 2. It took me a week to finish reading the book. 我花了一周时间读完这本书。 三、It is one's turn to do sth.意为"轮到某人做某事了"。例如： It's your turn to be on duty tomorrow. 明天轮到你值日了。 四、It is ／has been ＋时间段＋since ＋一般过去时，意为"自从……以来已过了……(时间)。" 例如： 1. It is / has been four days since I caught a cold. 我感冒已四天了。 2. It is / has been two weeks since we met last. 自从我们上次见面以来已过了两周。 五、It seems ／seemed ＋that从句，意为"看起来好像……"。例如： It seemed that our team was going to win. 我们队看起来好像要赢了。 六、It's＋表语＋to do sth.。例如： It's a good idea to go out for a walk. 出去散步是个好主意。 七、It's ＋adj.＋that从句。例如： It's true that I may fall behind the other students.我真可能落在别的学生后面。 八、It's＋adj.＋of(for)sb.＋to do sth.。对于这个句型究竟用of还是用for，主要取决于前面的形容词。如果形容词是描述不定式行为者的性格、品质等的，如kind，good，nice，clever 等用of；如果形容词仅仅是描述行为的则用for，这类形容词常见的有difficult，easy，hard，important，dangerous等。例如：
输入和输出函数的区别
输入输出函数区别如下： 一、printf 、sprintf、fprintf的区别 1.1 都是把格式好的字符串输出，只是输出的目标不一样： 1）、printf，是把格式字符串输出到标准输出(一般是屏幕、控制台，可以重定向),是和标准输出文件(stdout)关联的; 原型为: int printf(const char *format[,argument]...); 2）、sprintf，是把格式字符串输出到指定的字符串中，所以参数比printf多一个char*。这是目标字符串地址； 原型为：int sprintf(char *buffer,const char *format[,argument]...); 3）、fprintf，是把格式字符串输出到指定文件设备中，fprintf是格式化输出到一个stream，通常是到文件，所以参数比printf多一个文件指针FILE*; 原型为：int fprintf(FILE *stream,const char *format[,argument]...); 1.2. Fprintf c语言把文件看作一个字符(字节)的序列，即由一个一个字符(字节)的数据顺序组成。根据数据的组成形式，可分为ASCLL文件和二进制文件。ASCLL文件又称为文本文件(text)，它的每个字节放一个ASCLL代码，代表一个字符。二进制文件是内存中的数据按其在内在中的存储形式原样输出到磁盘上存放。 1）.fprintf（fp,"%d",buffer）;是将格式化的数据写入文件； fprintf(文件指针，格式字符串，输出表列); fwrite(&buffer,sizeof(int),1,fp); 是以二进位方式写入文件 fwrite(数据，数据类型大小（字节数），写入数据的最大数据，文件指针); 由于fprintf写入是，对于整数来说，一位站一个字节， 比如1，占1个字节； 10，占2个字节； 100，占3个字节； 10000，占5个字节；所以文件的大小会随数据的大小而改变，对大数据空间占用很大。而fwrite是按二进制写入，所以写入数据所占空间是根据数据类型来确定，比如int的大小为4个字节(一般32位下)，那么整数10所占空间为4个字节，100/10000所占空间也是4个字节，所以二进制写入比格式化写入更省空间。因此， 对于1 2 3 4 5 6 7 8 9 0 十个整数，用fprintf写入时，占10个字节；而用fwrite写入时，占40个字节。 对于100 101 102 103 104 105 106 107 108 109 110 这十个整数，用fprintf写入时，占30个字节；而用fwrite写入时，占40个字节。 对于10000 10100 10200 10300 10400 10500 10600 10700 10800 10900 1 1000 这十个整数，用fprintf写入时，占50个字节；而用fwrite写入时，还是
-it的用法及强调句型(精心整理)
it的用法及强调句型 it的用法 一、it作指示代词【完成句子】用one，ones，it，that，those填空 (1) — I can't find my watch. —You haven't found ______？If you want to buy a new ______，I suggest you buy ______ made in China. (2) We've got a big cup and two small ______. (3) The weight of an elephant is much greater than ______ of a tiger. (4) The books on the first shelf are easier than ______ on the second shelf. (5) The boy told his story and ______ of the girl upstairs. 【答案】(1) it; one; one (2) ones(3) that (4) those / the ones (5) that / the one 【结论1】 ①指代上文提过的事物时，it指的是同名同物，相当于the＋名词； ②one指的是同名异物，表示单数可数名词相当于a ＋名词；a / an＋形容词＋one等于a / an＋形容词＋名词；复数形式用ones； ③that后面常有后置定语，有特指意义，代替不可数名词或单数可数名词，相当于the＋ 名词； ④复数名词用those，相当于the ones。 【例句观察】— Someone is knocking at the door. Who is it? — It must be Leo. He said he'd come to see me. 【结论2】it指代人时，常指小孩或身份不明的人。 【例句观察】It's too quiet in the room. Everyone just keeps silent. 【结论2】it可用以指代环境或情况。 (6)— What time is it now? — It's half past seven. (7)— It is spring now and it's warm these days. 【结论3】it可用以指代时间、季节、天气或距离。 【注意】it指代时间时，有如下一些句型： (1) It is time for sth. (for sb.)to do sth. / that－从句(should do / did, 必须用虚拟语气) 例：① It's time for lunch. ② It's time for us to clean the house. ③ It's time that we should clean the house. ＝It's time that we cleaned the house. (2) It is / has been ＋some time ＋since－从句(从句用一般过去时) It is 10 years since I graduated from college. (3) It / This/That is the first / second time that－从句(必须使用现在完成时)这是某人 第……次做了某事。 It / This/That was the first / second time that－从句(必须使用过去完成时) 例：①It is the second time that she has visited the Great Wall. ②This was the first time that I had come late to school. (4) It was ＋时间点＋when －从句 例：It was evening when we got home. ＝It was evening in which we got home. (5) It was / will be ＋some time ＋before －从句 例：①过了5年他们才从北大毕业。 It was five years before they finally graduated from Beijing University. ②不久，我们就要从我们学校毕业了。 It won't be long before we graduate from our school. 二、it作形式主语 1.代替主语从句 ①It is clear ( obvious，true，possible certain....) that ..... “清楚（显然，真的，肯定．．．）” ②. It is important ( necessary，right，strange，natural...) that ... that 后的从句中要用虚拟语气（should + 动词原形），should 可以省去，建议记住该句型中的形容词。 It is important that we (should) learn English well.
appreciate表示感谢的用法
外教一对一https://www.360docs.net/doc/3116464064.html, 用appreciate表示「感谢」，用对不容易 在邮件里表示「感谢」的时候，我们常常会用到appreciate一词;在比较正式的场合，你也会偶尔听到有英美人在口语中使用appreciate 来表示「感谢」的含义。本帖将教会大家如何用对appreciate一词。1)表示感谢的时候，appreciate的对象通常不是某人，而是某件事。 和动词thank不一样的地方在于：thank 后面常常是某人。比如：Thank you for doing sth。但是appreciate后面常常是某件事，比如：I really appreciate your help. 很感谢你的帮助。Your support is greatly appreciated. 很感谢你的支持。以上的两个例句，通常都用在帮助或者支持完成之后说。而下面的这句话，是我们邮件中最常用的句式：I would appreciate it if you paid in cash. 如果你用现金支付，我会非常感谢。这个邮件的高频句式其实很容易出错，注意以下三点：appreciate后面的it不能漏掉appreciate后面不能直接加you以上面的句子为例，主句里的would和从句里的paid使用了过去式，是为了让语气更加婉转，而非表达过去的含义。I will appreciate it if...do...这样的句式也正确。2)中文里可以「欣赏」某人的品质;appreciate也一样。 中文里「欣赏」一词有两层含义：领略欣赏。比如：欣赏一段音乐认为……好。比如：老板很欣赏他的才华。巧合的是，appreciate 也有这两层含义：领略欣赏。You can't fully appreciate foreign literature in translation. 看翻译作品很难欣赏到外国文学的精髓。认为……好。His talents are not fully appreciated in that company. 在那个公司，他的才能得到充分地赏识。丨There's no point buying him expensive wines - he doesn't appreciate them. 别给他买很贵的酒，他不懂得品赏。3)appreciate还有一层生僻的含义：增值 我们会在财经新闻里看到appreciate及其反义词depreciate，分别表示「增值」和「贬值」。Their investments have appreciated over the years. 他们的投资在几年间增值了。currency depreciation 货币贬值 文章来源：https://www.360docs.net/doc/3116464064.html,
sscanf,sscanf_s及其相关用法
sscanf，sscanf_s 及其相关用法 #include
表语从句用法详解
表语从句用法详解(例句丰富) 一、表语从句的引导词 引导表语从句的词有连词that, whether，连接代词和连接副词，关系代词型what，以及as if, as though, because等连词。 1. 由that引导 The fact is that he doesn’t really try. 事实是他没有做真正的努力。 The trouble is that I have lost his address. 麻烦的是我把他的地址丢了。 My suggestion is that we should tell him. 我的建议是我们应该告诉他。 His sole requirement was (is) that the system work. 他唯一的要求是这个制度能起作用。 My idea is that we should start making preparations right now. 我的意见是我们马上就开始做准备工作。 2. 由whether引导 The question is whether the film is worth seeing. 问题是这部电影是否值得看。 【注意】whether 可引导表语从句，但与之同义的if却通常不用于引导表语从句。 3. 由连接代词引导 You are not who I thought you were. 你已不是我过去所想像的人。 The problem is who we can get to replace her. 问题是我们能找到谁去替换她呢。 The question is who (m) we should trust. 问题是我们应当相信谁。 What I want to know is which road we should take. 我想知道的是我们应走哪条路。 4. 由连接副词引导 The problem is how we can find him. 问题是我们如何找到他。 That was when I was fifteen. 这是我15岁时发生的事。 That’s where I first met her. 那就是我第一次遇见她的地方。 That’s why he didn’t come. 这就是他没有来的缘故。 That’s why I object to the plan. 这就是我反对这个计划的原因。 That’s where you are wrong. 这就是你不对的地方。
It的用法、Therebe句型
期末专题练习——It的用法、There be句型 ［教学内容］ 第一部分It 的用法 概说：It是个非常简单的单词,但其用法却很灵活。 一、指代作用。It作句子的主语。 （一）It指前面已经提到过的人或事物。 1. What’s this? —It’s a chair. 2. Who is it? —It’s me. 提示：it代替上文提及的原物(复数用they)； one指代上文提及的、泛指的可数名词单数（复数ones）； that指代上文提及的定指的可数名词单数或不可数名词（复数those）。 （二）It指时间、季节。虚义。 1. What time is it? —It’s nine. 2. It’s time to go to school. Let’s go. 3. What day is today? —It’s Saturday. 4. What is the date today? —It is Oct. 1st. 5. What season is it? —It is summer. （三）It指气候。虚义。 1. It is cold in this room. 这个房间很冷。 2. What’s the weather like today? —It’s fine. 今天天气怎么样？天气很好。 3. It often snows in winter in Harbin. 哈尔滨的冬天经常下雪。 （四）It指距离、情况等。虚义。 1. It is five kilometers from my home to the school. 从我家到学校有五千米。 2. It is very near from this shop to that. 从这个商店到那个商店很近。 3. It is a long way to the sea. 这离海很远。 4. Is it well with you? 你身体好吗？ 二、It作形式主语。 动词不定式、动名词短语、从句在整个句中起主语作用，而这一部分用词较多，因此
It的用法及典型句型归纳. 个人总结
It的用法及典型句型归纳 一、人称代词it的最基本用法是作代词，主要指刚提到的事物，想法，以避免重复;也可以指性别不明或性别被认为是不重要的人或动物；未指明但谈话双方都明白的事情或情况。 ①They watched the train until it disappeared in the distance. ②Is this your dog？No, it isn’t. ③I hate it when people talk with a full mouth.． 二、.非人称代词.it有时并不指具体的东西而泛指天气、时间、日期、距离、价值、度量、温度、环境等： It is a lovely day, isn’t it? // It was nearly midnight when she came back. It is April First today. // It is some 3000 kilometers from A to B. It is three dollars. // Today it is 30 degrees centigrade. 三、作形式主语，替代主语从句，动词不定式，或动名词短语 1.作形式主语替代主语从句 ⑴It is clear ( obvious，true，possible，certain....) that ＂┅清楚的（显然的，真的，可能的,肯定的．．．）＂ ⑵It is important ( necessary，right，strange，natural...) that + (should ) do (虚拟语气) ┅是重要的(必要的,对的,奇怪的,自然的┅) ⑶It is said (reported/ learned/believed/thought/known/told/hoped.....) that = sb / sth is said (reported/ believed /thought…) to do( to be doing/ to have done) sth ＂据说（据报道，据悉．．．）＂。 ⑷It is suggested ( advised/ ordered / demanded/ insisted/ commanded... ) that +(should ) do ＂据建议；有命令．． ⑸It is a pity ( a shame /an honour/a good thing/a fact,/a surprise/... ) that that后的从句一般用虚拟语气（should + 动词原形），should可省去．表示出乎意料，常译为＂竟然＂。没有这种意义时，则不用虚拟语气。 小练一下： It is very clear that he’s round and tall like a tree. = It is important that we (learn) English well. It is necessary that he (remember) these words. It is said that he has come to Beijing. = It is reported that another earth satellite has been put into orbit. = It is suggested that the meeting ( put off). It was ordered that we (arrive) there in two hours. It is a pity that such a thing ( happen) in your class. It is a pity that he (be) ill. 2.作形式主语替代不定式 . ⑴It is kind ( of sb. ) to do sth.= sb be kind to do sth.一般都是表示人的特性的形容词。如： bad /brave /careless/ clever /cruel / foolish / good （好心的）/ honest/ kind / lazy / modest/ naughty/ nice（有教养的）/polite/ rude / silly / stupid / wise ，等。 Eg. It is kind of you to give me a hand. = ⑵It is necessary ( for sb. ) to do sth. .不定式的逻辑主语是由for引起。常见的形容词有： Important/ necessary/ natural/ easy / safe / common / normal / hard / difficult / dangerous/ unusual/ rare / impossible / pleasant Eg. It is important for her to come to the party.
动名词的用法详解
动名词的用法详解 今天给大家带来动名词的用法详解，我们一起来学习吧，下面就和大家分享，来欣赏一下吧。 英语语法：动名词的用法详解 动名词因同时拥有动词和名词两者的特点而拥有及其丰富 的用法，熟练的掌握这些用法不仅可以使口语表达更地道生动，也能在写作中增分添彩。 动名词主要有四种用法，做主语，作宾语，作表语，作定语，每种用法下又分小类别，是一个非常复杂庞大的系统，学习者们往往会理不清脉络，今天就为大家带来动名词的用法讲解。 一.作主语 1.直接位于句首 eg.Swimming is a good sport in summer. 2.用it作形式主语，把动名词(真实主语)置于句尾作后置主语。 eg.It is no use telling him not to worry.
.mportant，essential，necessary等形容词不能用于上述结构。 3.用于“There be”结构中 eg.There is no saying when hell come. 4.动名词的复合结构作主语: 当动名词有自己的逻辑主语时，常可以在前面加上一个名词或代词的所有格，构成动名词的复合结构,动名词疑问句通常使用这种结构做主语 eg.Their coming to help was a great encouragement to us. Does your saying that mean anything to him? 二.作宾语 1.作动词的宾语 某些动词后出现非限定性动词时只能用动名词作宾语，不能用不定式。不定式通常指某种特定的动作，但动名词表示泛指，常见的此类动词有： admit,appreciate,excuse,stand,advise,allow,permit,avoid,consider,e njoy,finish,give up,cannot help,imagine,include,keep,understand,keepon,mind,report,risk,mis s,put off,delay,practise,resist,suggest,depend on,think about,set about,succeed in,worry about,burst out,insist on,feel like,be used
it用法归纳
it用法完全归纳 一、it 作人称代词的用法 1. 指事物 作为人称代词，it 可以除人以外的一切事物或动物。如： I dropped my watch and it broke. 我把手表掉在地上摔坏了。 It’s hard work, but I enjoy it. 工作很辛苦，可是我乐意干。 “Where is the dog?” “It’s in the bedroom. ” “狗在哪?”“在卧室里”。 2. 指人 it 指人主要用于指不性别不明的婴儿或用于确认某人的身份。如： Is it a boy or a girl? 是男孩还是女孩? There is a knock on the door. It must be the postman. 有人在敲门，一定是邮递员。 【说明】在答语中，常用来指本人，如说It’s me。 3. 代替某些代词 代词it 还可用于代替指示代词this, that 以及复合不定代词something, anything, nothing等。如： “What’s this?” “It’s a new machine. ” “这是什么?”“是一种新机器”。 Nothing is wrong, is it? 没出什么问题，是吗? 二、it 作非人称代词的用法 1. 基本用法 it 作非人称代词的用法，主要用于指时间、距离、价值、天气、气候及温度等自然现象。如： It’s too late to go there now. 现在去那儿已经太迟了。 It rained all day yesterday. 昨天下了一天的雨。 It can get very hot here. 这里有时会很热。 2. 用于某些句型 It’s time for sth. 该做某事了。 It’s time to do sth. 该做某事的时候了。 It’s time for sb to do sth. 某人该干某事了。