A：句子构成成分回顾

(一)句子构成

句子构成的成分共分为九种：主语，谓语，宾语，表语，定语，状语，补语，同位语和插入语。

一、主语：句子的核心主体，通常位于谓语动词之前，表明一个句子是谁或何种情况所发出执行或是承受的。在写作中常做主语的有名词、代词、主语从句、V-ing、To do五种。

1名词：Computersare now being widely used in almost all fields。

2代词：Weare now living in an information-explosion era。

3主语从句：Whether sports stars should earn a high salaryis still discussed heatedly。

4V-ing：Surfing the Internetoffers a new way for people to relax themselves。

5To do：To protect the environmentis everybody’s business。

二、谓语：描述或阐述主语的情况，由动词来充当，常位于主语之后。

1表状态用系动词：As I see it， movie stars’earning a high salaryisunfair and unjustified。

2表动作用及物或不及物动词：The Internethas revolutionizedpeople’s way of life。 Tastediffers。

3表拥有：人或物时用：have has无生命的东西：there be

Peoplehavedifferent views on this question。

There isno absolute agreement on this question。

4情态动词+动词原形：

In this way， teacherscan never be replacedby computers。

三、宾语：及物动词或介词所指向的对象。在写作中常做宾语的有名词、宾语从句、复合结构、V-ing、To do五种。

1名词作宾语：International tourism promotesthe economic development。

2宾语从句作宾语：Some people holdthat air travel should be restricted。

3复合结构：The advanced medical technology has madeit possible for people to live longer than ever possible before。

4 V-ing： Nobody can avoidbeing influencedby media。

5 To do： Some people wantto work for a big companywhile others chooseto work for a small one。

四、表语：接在系动词后，补充说明主语的情况又称为主语补足语。在写作中常做表语的有名词、形容词、V-ing、To do、从句五种。

1名词：The environmental problem isa serious problemin modern society。

2形容词：Time isfleetingand art islong。

3V-ing： The argument isconvincing。

4To do： A possible solution isto set down effective laws。

5从句：One advantage of computers’utilized in education isthat they can enrich the traditional teaching method to a great extent。