助动词have的用法

时间：2007-01-20 08:19:31

（单词翻译:单击）

1）have +过去分词，构成完成时态，例如：
　　He has left for London.　他已去了伦敦。
　　By the end of last month, they had¹ finished² half of their work.　
　　上月未为止，他们已经完成工作的一半。

2）have + been +现在分词，构成完成进行时，例如：
　 I have been studying English for ten years.
　我一直在学英语，已达十年之久。

3）have+been +过去分词，构成完成式被动语态，例如：
　 English has been taught³ in China for many years.
　中国教英语已经多年。

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1 had
vbl.have的过去式和过去分词；conj.有
参考例句：
I just had a good idea!我有个好主意！ The boy had a small branch of a tree in his hand.这个男孩手上拿一条小树枝。

2 finished
adj.完成的，精湛的；v.动词finish的过去式和过去分词
参考例句：
We finished up everything there was on the table. 我们把桌上的东西全吃完了。 We can certainly have the job finished on time.我们肯定能按时完成任务。

3 taught
v.teach的过去式过去分词
参考例句：
Children must be taught to be careful of traffic.必须教育孩子要当心车辆。 Miss Brown taught my daughter last year.去年是布朗小姐教我女儿的。