情态动词的用法:表示"可能"或"预测"(Can,Could,Will,Would,Shall,Should,Must,Ought to)以下是这些词的用法,总结的挺好的,希望对你有所帮助。A.can 和 could 用于表示"可能"或"预测":1. He can't be at home. (否定句)他不可能在家。
简单地说,表示肯定的推测用must,表示否定的推测用can't。例如:1.Tom must be at home. The light in his room is on.汤姆肯定在家里,他房间里的灯亮着呢。2.The man can't be Mr Li. He has gone to Japan and he will come back n