英语的be是个特别动词;有些语言,如中文和马来文,并没有be这样的动词。
Be除了原形的be之外,还有另外七种形式:am, is, are, been, being, was, were.
在句子中,be可以是主动词(The Principal Verb)或助动词(The Auxiliary Verb).
当主动词时,be在性质上属于接系动词(The Linking Verb), 后面要有名词、形容词、地方副词或短语作补足语(The Complement)。例如:
1. The man is a science teacher.
2. Marys new dresses are colourful.
3. I have been there before.
4. Mother is in the kitchen now.
这四个都是陈述句,可以变成疑问句,方法简单,把主语和be或助动词对换位置即可:
5. Is the man a science teacher?
6. Are Marys new dresses colourful?
7. Have I been there before?
8. Is mother in the kitchen now?
当be要在祈使句中出现时,它必须借重助动词do或dont之助,如:
9. Dont be silly!
10. Do be obedient!
11. Dont be a fool!
Be有两种缩写法,如下:
12. Hes not/He isnt
13. Youre not/You arent
但am + not的缩写法只有一个:
【英语讲义【117】BE的语法功能】相关文章:
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