has, have, had用法区别是什么?

Question

如题所述

Answer 1

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2018-06-29 1页 2.13分
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has have had

当主语是(I, we, they)时用have,当主语是第三人称he, she, it 时用has had 是has和have的过去式。

用法:

1、后接过去分词,构成现在和过去完成、完成进行时。例如:

a) He has gone to Beijing. 他已经到北京去了。

b) I have been a teacher since then. 从那时起我就一直当教师。

c) They had left when I got there. 我到那里的时候,他们已经走了。

d) He has been working hard since early morning. 丛一大早他就一直在下劲干活。

2、has have had也可以作为一般动词,意为“拥有”“进行”“吃”“使得”“让”等。如果后接不定式,意为“不得不”。因为它们不是特殊动词,所以不能在它们后面加not构成否定句,不能把它们移到句首构成疑问句。例如:

a) He has a good pen. 他有一支好笔。

b) We have supper at 6:00. 我们六点钟吃晚饭。

c) I had my hair cut yesterday. 我昨天理了发。(我让我的头发被剪了,昨天)

d) I have to leave now. 我得走了。