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need have done
could
have
been
done
,could have done各有什么意思
答:
这种用法,是“询问/谈论想象当时的情况或者是结果”。再如: If I
had
lost my job, I would
have
gone abroad. 假如我当时失业了,我就会到国外去了。(言外之意,我没有去,当时也没有失业。)could have
done
和
need
have done是什么意思 need have done 是表示需要做某事却没有做。
...could、might、may、would/+
have
done
的区别
答:
十、 “
need
+
have
+
done
”表示本来需要做某事而没有做。“needn‘t+have+done”则表示“本来不需要做某事而做了”。I needn‘t have bought so much wine—only five people came. 我本来没有必要买这么多酒,只来了五个人。He need have hurried to the station. In that case, be wouldn't ...
情态动词
have
done
的用法有哪些?
答:
1、“must+
have
+
done
”表示对过去事情的肯定推测,译成“一定做过某事”,该结构只用于肯定句。You must have been mad to speak to the servant.你和仆人说话,一定是发疯了。2、“can't+have+done”表示对过去事情的否定推测,译成“不可能做过某事”。Mary can't have stolen your money.She...
情态动词
have
done
用法归纳高中
答:
如:The flowers
have
died. I should / ought to have watered them often.You shouldn''t / ought not to have told them the truth.5.needn''t have
done
表示“本不必做某事而实际上做了”。如:It is warm today. You needn''t have worn your coat.6.didn''t
need
to do与needn...
辨析did not
need
to do与needn't
have
done
答:
I didn’t
need
to take a taxi from the airport – there was a bus all the way into the city. (= took the bus)2. needn't
have
+ 过去分词,表示做了不必做的事,译为“其实没必要……”,实际已做过了。表示虚拟语气。如: You needn't have come over yourself。你其实没...
didnot
need
to do与 neednot
have
done
的区别
答:
didn‘t
need
to do里need是普通动词,就是need本来的意思,(过去)没必要/不需要做某事 need not
have
done
里need是情态动词,意思是本来无必要做某事(却做了),本不该做某事 例如:He did not need to come early, so he came late.他不需要早来,所以他来得晚。He needn't have come...
need
的用法是什么?
答:
You needn't worry about that.(你不必为那个担心。)解析:句子主干结构为“主谓宾”其中 worry about 为“动词短语”,needn't 为“情态动词
need
”的否定形式,后接动词原形 worry。He needn't
have
done
it.(他本不需要做这件事。)解析:句子主干结构为“主谓宾”,其中 needn't have done ...
现在完成时
have
done
的用法到底有几种?到底怎么用才对
答:
He is always helping those who
need
help. (褒扬)She is always making much noise. (反对)过去完成时
had
done
1.no sooner...than... ; hardly/scarcely...when... 一,,,就,,,主句过去完成时,从句一般过去时。No sooner 和hardly/scarcely 在句首时倒装。I had no ...
need
的用法
答:
He doesn’t
need
to be told. 不需要告诉他了。(即他已知道了)(2) 比较 didn’t need to do 与 needn’t
have
done
:前者通常表示因为没有做某事的必要,所以没有去做;后者通常表示某事已经做了,但后来觉得没必要去做,含有责备或遗憾之味。如:I didn’t need to get up early this...
为什么是i don't
need
any help
答:
do 解释为“必要。。”当谓语动词时,否定为don't
need
,搭配为:dont need to do 或dont need sth解释为 需要需求 i neednt finish the work today 说明我今天不必把工作做完,没有必要性 neednt
have
done
是不必要做但是已经做了 例如 i neednt have hurried 我当时不必那么匆忙 第三次了。
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