请问:hadn't done 和hasn't done 和has to do 有什么不同?还有had to do

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请问:hadn't done 和hasn't done 和has to do 有什么不同?还有had to do

请问:hadn't done 和hasn't done 和has to do 有什么不同?还有had to do
请问:hadn't done 和hasn't done 和has to do 有什么不同?
还有had to do

请问:hadn't done 和hasn't done 和has to do 有什么不同?还有had to do
这是关于have的一些用法
1、have的第三人称单数为has
故has to do为第三人称“它/他/她”的用词,其中包含短语“has to+动词原型”,意为“必须得去某事”;
故hasn't done=has not done是现在完成式has done的否定式,意为“到目前为止,还没有完成某事”.
2、have或has的过去式和过去分词为had
故hadn't done=had not done,是过去完成式had done的否定式,意为“过去没有做过某事”.

请问:hadn't done 和hasn't done 和has to do 有什么不同?还有had to do 为什么是not have done和hadn't done ? 一般过去时的否定是didn't do,现在完成时的否定是haven't done 或hasn't done 或hadn't done don’t have;haven’t和need的用法是不是当have+done组成现在完成时时才用haven’t+done?这时第三人称单数是不是要变成hasn’t+done,过去式是不是要变成hadn’t+done?是不是当have+to do或是have+sth时就用do He insisted that he_____that and that he_____free.A.didn't do:was set B.hasn't dong:is setC.hadn't done:be setD.hadn't dong :should set选什么?为什么? I wish I hadn’t done she's done well,hasn't she? I wish I hadn‘t done or had done differently. don't doesn't didn't won't hasn't haven't hadn't 的用法 hasn'arrive 和hadn'arrived有什么区别? 原因sister left home in 1998,and___since.a,hadn't been heard of b,hasn't been heard ofc,hadn't heard of d,hasn't heard of She's had her lunch ,_______ she A.isn't B.hasn't C.hadn't D.doesn't 倒装句,hasn't she done还是has she not done? 2.Until then,his family _______ from him for six months.A) didn’t hear B) hasn’t been hearingC) hasn’t heard D) hadn’t heard Until then,his family _______ from him for six months.A) didn’t hear B) hasn’t been hearingC) hadn’t heard D) hasn’t heard his family___from him for six months until yeaterdayA.hasn't heardB.didn't hear C.hadn't heard D.heard He had done的反义疑问句是hadn't he?还是didn't he? i would rather you hadn't done such a thing用haven't done 不可以么