请赐教 I needn't 和 I don't need的区别?可否举例说明？

请赐教 I needn't 和 I don't need的区别?可否举例说明？ I (I)can do it .I needn't your help Do you have to buy this hat?No,i needn't necessary为什么填needn't Do you have to...可以用No,I needn't. I am free toningt. I needn't do my homework. I am going to read (n ). You needn't do the washing up:I'll do it later.请问这句话中‘‘needn't ’’ You needn't do the washing up:I'll do it later.请问这句话中‘‘needn't’’ Thanks.You ______ it.I could manage it myself A.needn’t doB.needn’t have done C.mus...Thanks.You ______ it.I could manage it myself A.needn’t doB.needn’t have done C.mustn’t do D.shouldn’t have done中B和D有什么区别?Catherine,I have 请帮忙选择和讲解-May I do the rest of the work tomorrow?--Yes,of course.You___finish it today.A must B mustn't C needn't D don't have to 有I don‘t need to do这种形式吗或者是I needn't do形式? Needn't have done 和needn't do的区别!请告诉我具体的意思.还有,needn't do可以用在虚拟语气中吗?Needn't have done 一定要用在过去时态中吗? I can do it by myself.I ____any help.I can do it by myself.I ____any help.A.don't need B.needn'tC.don't need to D.needn't to You needn’t stop me.Even if you dare do it,I won’t allow you to do it. ----I must start at once,______ I ----No, you _____ A. mustn't; mustn't B. needn't...(选择题)A. mustn't; mustn't B. needn't; mustn't C. mustn't; needn't D. needn''t; needn't请说明为什么. （ ）－Must I do my homework at once?A.needn't B.mustn't C.can't（ ）－Must I do my homework at once?A.needn't B.mustn't C.can't D.may not May I finish the work this afternoon?No,you __ You __ finish it now请填空 A mustn*t needn*t B needn*t don*t have toC needn*t mustn*t D mustn*t mustn*t You______ help me .I can do it myself.A.need B.don't C.need't D.needn't to 英语翻译I hope.the next lifewe can become two rats.needn't do the anytingwhat all needn't fearstupid acquaintanceshiplove each stapidly ,happy lifeForever