大学英语六级考试语法

大学英语六级语法重点讲解

英语六级语法重点讲解

特殊的虚拟语气词——should

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

(2)It is 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.

一般现在时代替完成时

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

不定式的特殊句型so as to

1）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。

None、few、some、any、one、ones的用法

一、none 无

1) none作主语，多与of 构成短语none of。在答语中，none可单独使用。

Are there any pictures on the wall?None.

2) none作主语，谓语动词单复数均可。但如做表语，则其单复数与表语一致。

It is none of your business.

二、few 一些，少数

few 作主语时，谓语动词用复数，多用于肯定句。

三、some 一些

1) 可与复数名词及不可数名词连用。

2) 当做"某一"解时，也可与单数名词连用。（= a certain）

You will be sorry for this some day.

总有一天，你会后悔这件事的。

A certain (some) person has seen you break the rule.

某些人不同意你的看法。

注意：

(1)在肯定疑问句中用some代替any。

(2)some用于其他句式中:

a.肯定疑问句中：说话人认为对方的答案会是肯定的，或期望得到肯定回答时。Would you like句式中，表委婉请求或建议，如：

Would you like some coffee?

b.在条件状语从句中表示确定的意义时，如：

If you need some help，let me know.

c.some位于主语部分,

Some students haven‘t been there before.

d.当否定的是整体中的部分时，some可用于否定句。如：

I haven‘t heard from some of my old friends these years.

这些年我没有收到一些老朋友的信。

四、any 一些

1)any 多用于否定句和疑问句和条件状语从句中。当句中含有任何的意思时，any可用于肯定句。

Here are three novels. You may read any.这有三本小说，你可任读一本。

五、one, ones 为复数形式