You _____ go to see a doctor 用need not还是用do not need

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You_____gotoseeadoctor用neednot还是用donotneedYou_____gotoseeadoctor用neednot还是用donotneedYou_____gotoseea

You _____ go to see a doctor 用need not还是用do not need
You _____ go to see a doctor 用need not还是用do not need

You _____ go to see a doctor 用need not还是用do not need
You __need not___ go to see a doctor .
这里need是情态动词,后面接动词原形

是 need not ( 情态动词)
因为need 作实义动词时,人作主语后接不定式,即need to do sth ( 这道应该是 do not need to go ...)
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need not不必,后面跟动原,它是must的否定形式。donot need 是不需要,后面跟to do Sth.它是need的否定形式。

needn't
如果用 don't need的话 要接 to

在need not do sth 的句型中,need 的用法等同于情态动词;

而 do not need + 不定式,由于句中用了助动词 do ,need 就是句子的谓语动词,后面只能跟不定式。

 

因此,这句同样的意思两种表达方法:

 

  1. You need not go to see a doctor.

  2. You do not need to go see a doctor.

填 need not:
You need not to see a doctor. 你不必看医生
如填 do not need则要把 ‘to’ 放到 ‘go’ 的前面:
You do not need to go see a doctor. 你不需要去看医生。