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大宇私人伊甸园: 首页 > 所有文章 > 老码识途 > 英语学习 > [英语学习]002.Be动词的形式和用法

[英语学习]002.Be动词的形式和用法

发布时间:2018/05/08 英语学习 标签英语英语学习笔记阅读:103

Be动词的形式

一般现在时态:(I) am; (we\you\they) are; (he\she\it) is
现在分词:being(用于进行时态)
过去式:was(单数)、were(复数)
过去分词:been(用于完成时态)

Be动词的用法

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. Mary's 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 Mary's 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“don't”之助,如:
9. Don't be silly!
10. Do be obedient!
11. Don't be a fool!
“Be”有两种缩写法,如下:
12. He's not./He isn't.
13. You're not./You aren't...
但“am + not”的缩写法只有一个:
14. I'm not.
有人用“amn't”, 但这并不是标准英语.

谈过了“be”作主动词的功能,现在看看“be”作助动词时,有些什么用法:

1.“Be + 现在分词”以组成进行式时态(Continuous Tenses),如:
  • Tony’s maid is washing his new car.
  • The children are playing in the field.
  •  Samuel was eating when I came in.
  • We have been living here since 1959.
2.“Be + 过去分词”以组成被动语态(The Passive Voice),如:
  •  Her money in the drawer was stolen.
  • A number of good jobs are taken up byforeigners.
  • David studied in Taiwan but has been trained as a language lecturer in America.
  • Can all the wonderful birds be found in our Bird Park?
  • The disobedient boy was told to stand out- side the classroom.
  • Steps are being taken to reduce traffic con- gestion during peak hours.
  • Dishonest students will be immediately dealt with.
The bottom line, for me, is simple.

Let’s hope it doesn’t take 500 years for a discipline of testing to becomes the standard for software developers.

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