第1个回答 2007-07-30
You needn't do sth 或 You don't have to do sth 都是正确的。
第2个回答 2007-07-30
这时间不要can用need
you don't need to do sth.本回答被提问者采纳
第3个回答 2007-07-30
Can't you not do sth?
Can you stop doing sth?
第4个回答 2007-07-30
Can you do not sth ?
第5个回答 2007-07-30
you needn't do sth