雅思写作核心语法知识总结.doc

雅思写作核心语法知识总结
( 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: Computers are now being widely used in almost all fields.
2 代词: We are now living in an information-explosion era.
3 主语从句: Whether sports stars should earn a high salary is still discussed heatedly.
4 V-ing: Surfing the offers a new way for people to relax themselves.
5 To do: To protect the environment is 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 salary is unfair and unjustified.
2 表动作用及物或不及物动词: The has revolutionized people ’ s way of life.
Taste differs.
3 表拥有:人或物时用: have has 无生命的东西: there be
People have different views on this question.
There is no absolute agreement on this question.
4 情态动词+动词原形:
In this way, teachers can never be replaced puters.
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 promotes
the economic development.
2 宾语从句作宾语: Some people hold that air travel should be restricted.
3 复合结构: The advanced medical technology has made it possible for people to live longer than ever possible before.
4 V-ing: Nobody can avoid being influenced by media.
5 To do: Some people want to work for a pany while others choose to work for a small on