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: |