高三英语 语法基础知识：动词 知识精讲.doc

用心 爱心 专心 116号编辑
高三英语 语法基础知识：动词 知识精讲

动词是表示动作和状态的词。在英语的句子中，如果动词用做句子的谓语，那么在人称和数方面受主语的限制，在时态、语态和语气方面 taken into a warm room.
Negroes were not treated as human beings.
b. be 与shall , will , should , would , can , must , may 等一起构成被动语态和进行时态。
The drawing must be handed in five days before the exhibition.
He must be doing his homework now.
c. been 帮助构成各种完成进行时和完成时态的被动语态。
He has been doing his homework this morning.
In some places people have been warned of SARS.
d. being 帮助构成进行时态的被动语态和动名时，分词的被动式。
The water in the clothes in being turned into vapour.
I was afraid of being scolded.
（2）助动词have
have作助词时有have , has , had , having 四种形式。
a. have 与has帮助构成一些完成时态及完成进行时
Have you ever seen this film ?
The whole city has been changed into a big beautiful park .
He may have worked out the problem.
We have been working at this difficult problem.
b. had 帮助构成过去完成时态和虚拟语气过去时态。
用心 爱心 专心 116号编辑
How long had you stayed in Beijing before Mr Zhang came here ?
If he had been here , he would have helped us.
c. having 帮助构成分词的完成式。
Having finished the work , he went home.
（3）助动词do
do作助动词时有do , does , did 三种形式。
a. 可以帮助实义动词一般现在时与过去时的否定式和疑问式。
What time do you / does he get up every day ?
I / He didn’t see the teacher that