don"t need和don't have to 的区别?
问题描述：
don"t need和don't have to 的区别?
1.You____ return the dictionary now.You can keep it till next week if you like.
A.can't B.mustn't C.don't need D.don't have to
2.You mustn't finish the work now.There's plenty of time.(改错）
两题的意思不是都差不多吗?为什么在正确答案里,第一题选的是don't have to而第二题是把mustn't改成needn't 不能改成don't have to
答
don't need to do sth.第一题少了一个TO.
MUSTN'T 是禁止的意思 很强硬.语境表明 应该用 needn't.don't have to 也可以 .不过改错题是一错一改