Must用法全接觸
一、表“必須”.
You must talk to them about their study.你必須同他們談?wù)勱P(guān)于他們學(xué)習(xí)的事.
二.在否定結(jié)構(gòu)中表不許.
You mustn't leave here.你不能離開這兒.
三.表堅(jiān)定的建議.
You must come and see us as soon as you get to Shanghai.一到上海你得馬上來看我們.
四.表推測(cè),暗含有很大的可能性,用在肯定句.
He must be ill.He looks so pale.他肯定是病了.他的臉色那么蒼白.
注意：
may 暗含的可能性較小.must 暗含的可能性較大.否定的猜測(cè)用can't
The baby can't be ill.He is so active.那寶寶不大可能是病了.他那么活躍.
五.關(guān)于must的簡(jiǎn)短回答：
Must I clean the dining room at once?我必須馬上打掃膳廳嗎?
Yes,you must.是的.
No,you needn't.不必馬上打掃.（No,you don't have to.）