They didn't need to leave so early at that time这句话有错误的地方吗?

为什么They didn't need to help.不对? 用needn't to或didn't have to或didn't need填空：Then the frogs thought that they ( ) go any further. They said they didn't need any help.同义句They said they [ ] [ ]help They didn't need to leave so early at that time这句话有错误的地方吗? They ( ) make a decision about the election at the meeting.A.didn't need B.needed not C.hadn't to D .didn't have to 这道题为何要选D呢? didn't need to和和need't have done什么区别? They found there wasn't anyone at the entrance so they [ ] proof of their ages .A,didn't need to show B,needn't have shown C,couldn't show D,musn't shown didn`t need to do 和need not to do区别 didn`t need to do 和need not to do区别 they said they didn't need any help.(同义句）they said they _____ _____ help. Didn't they come to the party last week? I didn’t know how would they go to london. They didn't go to the beaches last Sunday----- ------.填空 people didn't t____(有） TVs and they didn't go to the cinema. they went to the cinema ,____?A.didn't they B.do they C.did they D.don't they 英语翻译I couldn′t make the colors match today .I don′t know what else to say .Except I tried and they can′t say I didn′t .I don′t like the stuff they′re feeding me .They don′t like the things I see .But I don′t think I need to be needn't have done和didn't need to do 有什么不同? didn't need to do 与needn't have done 的区别和相同点