名师串讲综合英语（二）(珍藏版)13

下册

Link Verbs

英语除动词be之外，还有一些动词也可以作系动词，如表示状态或情况的：keep,look,feel,appear,lie,remain,seem,stay,smell,sound,taste等；以及表示变化的：get,grow,turn,fall,run,become,go等。下面我们来分析一下带系动词的句子结构。

1.系动词后面带名词从句

Good manners are the happy way of doing things.

It seemed to him that he had never worked so hard in his life.

2.系动词后面带形容词

She sounded rather surprised on the phone.

Sit down.Just stay calm and you will be alright.

3.to be 可以加在seem,prove,remain,appear等系动词和其后的名词或形容词之间，但也可以省略。

The task proved (to be) impossible.

They seem (to be) such friendly people,but they never replied to our invitation.

What has happened remains (to be) a mystery.

The problem first appeared (to be) unsolvable,but later we came up with a very good solution.

注意：在seem,appear等词后，可加其他非 to be 的不定式，但这时，它们则不是系动词而是不及物动词。

4.系动词后面带介词词组

Their wedding will be in late June.

The shop stays round the clock.

Impersonal It

it在句中可以作代词，代表刚提到的东西或一个彼此都知其所指的东西；此外它还可用来代表时间、天气、自然环境、距离等。it还有一个很重要的用法，那就是作先行词，代表句子的实际主语或宾语；它也可以用来改变句子结构，使句子的某一成分得到强调。

5.作句子的形式主语

（1）代表不定式

It’s absurd to be afraid under such circumstances.

It’s a great privilege to know you.

(2)代表动名词

It’s no using crying over split milk.

It’s no good waiting for him this morning.He won’t come back until five in the afternoon.

(3)代表that引导的从句

It is believed that he is one of the best piano players in the world.

It is suggested that he (should) be sent to hospital immediately.

（4）代表wh引导的从句

As long as he finishes his work,it doesn’t matter when he comes to the office.

It has not been decided yet whether or not I should go on with my study.