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1,Must与Haveto的区别,2,Must与Have to 1.Must 表主观；Have to表客观 例如：I must go now!我必须走了! I have to stay here！我只得留在这儿！,3,2.Must没有时态变化；而Have to有人称、 数 、时态的变化。 例如：He must leave now. He has to leave now. 3.Must的回答 例如： Must you be here at 10：20? 肯定回答：Yes,I must. 否定回答: No,I neednt be here at 10:20 . No,I dont need to be here at 10:20. No, I dont have to be here at 10:20. 注意：Mustnt 表禁止！,4,must+动词原形 表现在的推测 She must be 45 years old. must+have+动词的过去分词 表过去的推测 She must have finished her homework. 否定句： 将must变成: dont need to Neednt to You must come here at 2:00. You dont need to come here at 2:00.,你学会了吗？,5,See you!,
