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2015年卫生类职称英语语法：虚拟语气

虚拟语气用来表达不可能或难以实现的愿望，与事实相反的假设，通常分为基本的三种形式。

1. 与现在事实相反的虚拟：

If + did / were + ..., ... would

should

could + do (动词原形)

might

If I were you, I would go abroad at once. (I am not you.)

If he knew it now, he could help me. (He doesn't know it now.)

2. 与过去事实相反的虚拟：

If + had done + ..., ... would (might) have done ...

If I had known your telephone number yesterday, I would have phoned you.

(I didn't know your telephone number.)

If you had come here a littleearlier just now, you might have met her.

(You didn't come here earlier.)

3. 与将来事实相反的虚拟：

(1) If + should + v., ... would + v.

(可能性很小)(译作“万一”)

If it should rain tomorrow, you could stay at home.

If I should fail, what should Ido?

(2) If + did / were to + v ..., would + v.

(完全不可能)

If the sun were to rise in the west, I would lend you the money.

If you finished it in 3 minutes, I would give you my car.

4. 重点：

[简单联想记忆]：

● 下列动词后的“宾语从句”中需要用虚拟形式，即should + 动词原形，shoud在美国英语中要省略(TOEFL语法考点)。此类常见的动词有：order, ask, decide, demand, require, recommend, suggest(建议)insist(坚决要求)，advise, etc.

例句：He suggested that we (should) help them with English.

The teacher ordered that the homework (should) be finished within half an hour.

● 下列名词后的同位语从句中要用“should + 动词原形”(should可省去)的虚拟。

suggestion, order, request, demand, importance, proposal.

He made a suggestion that we (should) have a fancy dress party.

I think it is a thing of importance that it (should) be done soon.

● It is / was important / necessary / natural / essential / advisable / strange / surprising, ect. + that +主语+ should + v.

It is strange that you should say such a thing.

It was important that you should tell me all the information.

● wish后的宾语从句中，as if 后的状语从句中，须用下列的虚拟形式：

主 + wish+ (that) + 主 + did / were(指现在)

haddone(指过去)

would+ v.(指将来)

Iwishthat I met my uncle now.

IwishI had met my uncle yesterday.

IwishI could meet my uncle tomorrow.

● It is (high) time that ... + did / were ...

It is time that you went to bed.

● would rather that ... + did / were ...

I would rather that you were not here now.

● would sooner that ... + did / were ...

I would sooner that you got up earlier.

I would sooner that you were not my brother.