UKiset考试：否定式的语法应用

留学英国你想如何提高英语语法水平，其要注重平时的积累，要求的UKiset考试的词汇量很多，关于不定式的用法，你了解多少，下面英国私立学校入学考试网给大家简单介绍一下。

表示目的;它的否定式是so as not to do。

Tom kept quiet about the accident so as not to lose his job.

汤姆对事故保持沉默是为了不丢掉他的工作。

Go in quietly so as not to wake the baby.

轻点进去，别惊醒了婴儿。

2) so kind as to ---劳驾

Would you be so kind as to tell me the time?

劳驾，现在几点了。

1) 有些动词用一般现在时代替完成时：

hear, tell, learn, write , understand, forget, know, find , say, remember.

I hear (= have heard) he will go to London.

I forget (=have forgotten) how old he is.

2) 句型 " It is „ since„"代替"It has been „ since „"

3) It is (= has been) five years since we last met.

1) It is demanded / necessary / a pity + that„结构中的主语从句的谓语动词要用should 加动词原形， should 可省略。

句型：

(1)suggested

It is (2)important that„+ (should) do

(3) a pity

(1)suggested, ordered, proposed, required, demanded, requested, insisted; + (should) do

(2)important, necessary, natural, strange

a pity, a shame, no wonder

(3)It is suggested that we (should) hold a meeting next week.

It is necessary that he (should) come to our meeting tomorrow.

2)在宾语从句中的应用

在表示命令、建议、要求等一类动词后面的从句中。

order, suggest, propose, require, demand, request, insist, command, insist + (should) do

I suggest that we (should) hold a meeting next week.

He insisted that he (should ) be sent there.

注意： 如suggest, insist不表示"建议" 或"坚持要某人做某事时"，即它们用于其本意"暗示、表明"、"坚持认为"时，宾语从句用陈述语气。

The guard at gate insisted that everybody obey the rules.

判断改错:

(错) You pale face suggests that you (should) be ill.

(对) Your pale face suggests that you are ill.

(错) I insisted that you ( should) be wrong.

(对) I insisted that you were wrong.

3)在表语从句，同位语从句中的应用

在suggestion, proposal, idea, plan, order, advice等名词后面的表语从句、同位语从句中要用虚拟语气，即(should)+动词原形。

My idea is that we (should) get more people to attend the conference.

I make a proposal that we (should) hold a meeting next week.

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