英语虚拟语气 用法点拨

英语虚拟语气用法点拨

虚拟语气(Subjunctive Mood)这一语法项目是各类英语考试中心测试的重点之一。虚拟语气是一种特殊的动词形式，用来表示说话人所说的话并不是事实，而是一种假设、愿望、怀疑或推测。判断是真实条件句还是非真实条件句。只有在非真实条件句中才使用虚拟语气。通过句子意思，看假设的条件是否能够实现，能够实现是真实条件句，不能使用虚拟语气；假设的条件不能实现则是非真实条件句，要用虚拟语气.判断这个假设是与哪个事实相反。通常有三种情况：①与过去事实相反。②与现在事实相反。③与将来事实可能相反

I: 最基本的虚拟语气句型:

1. 虚拟现在时表示与现在事实相反的假设，其if 从句的谓语形式用动词的过

去式(be 一般用were)，主句用would/ should/ could/ might +动词原形。

If places were a like, there would be little need for geographers.

如果各个地方都一样，就不需要地理学家了。

2. 虚拟过去时是表示与过去事实相反的假设，if 从句的谓语形式用过去完成时

即had＋过去分词，主句用would / should / could / might + have +过去分词。

If he had known your address yesterday, he would have telephoned you.

3. 虚拟将来时是表示对将来实现的可能性很小的或不确定的假设。If从句的谓

语形式用一般过去式或用were to / should +动词原形，主句用would / should

/could/ might +动词原形。

If he were to leave today, he would get there by Friday

4. 省略if 采用倒装语序的条件句。

有时可以把含有助动词、情态动词、be或have的虚拟条件句中的连词if 省去，而将had , should, were 等词

提到主语之前，即用倒装结构。

Had he worked harder, he would have got through the exams.

Were he to leave today, he would get there by Friday.

Were I in your place, I wouldn't do that

5. 有时虚拟条件句并没来if 从句表示出来，而是用介词短语(otherwise, or, without, but for)、上下文或其它方式来表示。

We didn't know his telephone number; otherwise we would have telephoned him.

Without you help, I wouldn't have achieved so much.

But for your help, I would not have succeeded.

II: 虚拟语气在从句中用should的情况:

1. 在建议,要求,命令,想法后的动词后的从句里,用should + 动词原形, should 可以省略. 如advise, agree, command, decide, demand, determine, grant, indicate, insist, order, prefer, propose, request, require, stipulate, suggest, urge, vote. 常考到的是: suggest, advise, demand, require, propose, insist, order, request.

His doctor suggested that he (should) take short leave of absence.

The author proposed that TV (should) be turned off at least one hour every day.

2. 在建议,要求,命令,想法后的名词后的从句里, 用should + 动词原形, should可以省略. 如

advice, agreement, command, decision, decree, demand, determination, indication, insistence, order, preference, proposal, request, requirement, stipulation etc.

It was Bill's suggestion that everyone (should) have a map.

His suggestion was that everyone (should) have a map.

He gave us a suggestion that everyone (should) have a map.

3. 在It is/was +形容词后的that 从句中用should的结构, should 可以省略. 这类形容词常见的有: advisable, anxious, compulsory, crucial, desirable, eager, essential, fitting, imperative(绝对必要), impossible, improper, important, natural, necessary, obligatory, possible, preferable, probable, recommended, urgent, vital etc.

It‘s natural that she (should) do so.

It is essential that we (should) tell her the news.

4. 在lest 和for fear that( 以免) , in case (以防)从句中用should, should 可以省略.

She walked quietly lest she (should) wake up her roommates.

Have your gun ready in case we should need it.

III: wish 后的that 从句中:

1. 表示现在或将来的愿望,从句中过去式.

I wish I knew his address.

I wish I were young.

2. 表示过去没有实现或不可能实现的愿望, 从句用过去完成式或would, could, might + have + 过去分词.

I wish you had written to him.

I wish I could have slept longer this morning, but I had to get up and come to class.

3. 如果将wish改成wished, 其后that 从句中的动词形式不变.

4. 如果that 从句中用would , 一般表示对现状不满或希望未来有所改变或请求

I wish he would answer my letter.

I wish prices would come down.

I wish you would help me.

I wish you would stop asking silly questions.

IV: 在It's about/ high/ first(second, third etc) time 后的that 从句中, 用过去式. 表示“该是做什么的时候了”

It is about time you were in bed.

It is high time we left.

It is the first time I came here.

V: 在would rather, would sooner, would just as soon 后的that从句中, 用过去式或过去完成式, 表示”宁愿做什么”

I would rather he came tomorrow than today.

John would rather that she had not gone to the party yesterday evening.

VI: 在if only 感叹句中, 谓语动词与wish宾语从句的虚拟形式相同.

If only he didn't drive so fast! (现在)

If only she had asked someone's advice.(过去)

If only the rain would stop.(将来)

VII: 在as if / as though 从句中, 表示和现在事实相反或对现在情况有所怀疑, 用过去式; 表示过去想象中的动作或情况, 用过去完成式.

He speaks as if he were on the spot.

She spoke to me as if I were deaf.

This device operated as though it had been repaired.

注: 1. 在as if / as though 句中, 如果有可能成为事实,

用陈述语气.

He looks as if he is going to be ill.

2. 在insist 后的从句中, 如果是坚持自己, 用陈述语气, 坚持别人做什么事情, 用虚拟语气.

she insists that she is right.

she insisted that I should finish the work at once.

英语倒装句用法大全

倒装句

英语最基本的语序是主语在前，谓语动词在后。但有时由于句子结构的需要或表示强调，就要采用倒装形式。将谓语动词完全移到主语之前称为完全倒装，只将助动词或情态动词放到主语之前称为部分倒装。强调性倒装和以so, neither, nor开头的句子是高考例题的热点。

（一）倒装句的意义

1、适应一定的语法结构的需要，主要是指疑问句句型结构的需要。

e.g. May I come in?

Was the People’s Liberation Army founded in 1927?

2、为了强调某一部分，而把这部分放到句首，构成倒装。

e.g. Never have I been late for school this term.

So early did he come to school that no other students came.

（二）倒装的使用情况

1、在“there be”结构里，there是引导词，主语在be后。

e.g. There is a box on the table.

2、在疑问句中。

e.g. Is she singing in the classroom?

What does your mother do?

3、在here, there等副词开头的某些句子里（要用一般现在时态）。如果主语是人称代词，主语和主要动词的词序不变。（完全倒装）

e.g. There goes the bell.

Here is an apple for you.

There she comes.

4、重复倒装句型，用在以so, nor, neither开头，表示谓语所述的情况也适用于另一个人或一事物的肯定或否定句中。so用于肯定句，表示“也一样”、“也这样”；nor, neither 用于否定句，表示“同样也不，也不这样”。

e.g. I am watching TV. So is she.

My parents didn’t watch TV last night. Neither (Nor) did I.

5、直接引语的全部或一部分放在句首时，主句中的主谓也常直接倒装。（完全倒装）

e.g. “Very well,” said the French student.

“Bring me two eggs and a cup of tea, please.” said he.

6、在以never, little, hardly, not only, few, not, seldom等否定副词开头的句子中，采用部分倒装。如不放在句首就不要倒装。

e.g. Little did he say at the meeting.

Never shall I forget the day when I joined the Army.

比较：I shall never forget the day when I joined the Army.

7、用于以only所修饰的副词、介词短语或状语从句的句子中。

e.g. Only when the war was over in 1918 was he able to get happily back to wrk.

Only in this way can we learn English well.

注意：如果only后的词组不是状语，不需倒装。

e.g. Only Wang Lili knows this.

8、为了表达生动，有时把表地点、方位的副词，如up, down, out, away, in等放在句首，同时把谓语动词放在主语之前。若主语为人称代词，主语和谓语动词的位置不变，只将副词放在句首。（完全倒装）

e.g. Away hurried the boy.

Out rushed the girl.

9、在虚拟结构中，条件从句的谓语含有were, had 和should这三个词是，可省去if，将这些词移至主语之前。

e.g. Had I time (= If I had time), I would go and help you.

Were I you (= If I were you), I would go abroad.

Should he come (=If he should come), tell him to ring me up.

10、as引导让步状语从句时要倒装（形容词/ 副词/ 名词/ 动词+ as + 主语+ 谓语）。

e.g. Proud as they are, they are afraid to see me.

Child as he is, he seems to know everything.（child前不加冠词）

Hard as he worded, he made little progress.

11、用于某些表示祝愿的句子里。

e.g. May you succeed!

Long live the People’s Republic of China!

12、So + 形容词、副词及such 置于句首时要倒装。

So happy did he feel.

Such was me.