下面几个句子哪几个正确?1.Youneedn'tdoitagain．2.Youdon'tneeddoitagain.3.Wedon‘tneedtotellhimthetruth．4.Weneed'ttellhimthetruth.

Question

下面几个句子哪几个正确?
1.You needn't do it again．
2.You don't need do it again.
3.We don‘t need to tell him the truth．
4.We need't tell him the truth.

Answer 1

You needn't do it again．
正确.need作情态动词用.

2.You don't need do it again.
错误.need在这里作实义动词用,应该是need to do.
改：You don't need to do it again.

3.We don‘t need to tell him the truth．
正确.need作实义动词.

4.We need't tell him the truth.
句子结构没问题,need作情态动词.就是needn't少打了字母.