have和has有何区别have
has have had 的用法:
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。
注: has have had也可以作为一般动词,意为“拥有”“进行”“吃”“使得”“让”等。...全部
has have had 的用法:
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。
注: 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。
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