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 everybodys 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 starsearning a high salaryisunfair and unjustified.
2表动作用及物或不及物动词:The Internethas revolutionizedpeoples 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.
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