must-和haveto-的区别

Must与Haveto1.Must表主观；Haveto表客观例如：Imustgonow!我必须走了!Ihavetostayhere！我只得留在这儿！2.Must没有时态变化；而Haveto有人称、数、时态的变化。例如：Hemustleavenow.Hehastoleavenow.3.Must的回答例如：Mustyoubehereat10：20?肯定回答：Yes,Imust.否定回答:No,Ineedn’tbehereat10:20.No,Idon’tneedtobehereat10:20.No,Idon’thavetobehereat10:20.注意：Mustn’t表禁止！•must+动词原形表现在的推测•Shemustbe45yearsold.•must+have+动词的过去分词表过去的推测•Shemusthavefinishedherhomework.•否定句：•将must变成:don’tneedtoNeedn’ttoYoumustcomehereat2:00.Youdon’tneedtocomehereat2:00.