情态动词【名师解难】一、考查情态动词的基本用法一些情态动词的常用的意义往往为高考考查的焦点，考生须准确理解其含义并根据句子意思选择正确的情态动词。1must和have to两者都表示“必须”的意思，但must含有说话人主观上的看法、态度；have to则表示客观上的需要。【考例】-Must we finish giving out the posters today?-Yes, we _. It cant be put off any longer. 太原市A. canB. mayC. must答案C。解析 此题考查情态动词的用法。回答由must引起的一般疑问句，其肯定答语要用must，不能用can或may。故选C。-I didnt pass the math test. I think I have spent too much time playing computer games recently.-I agree. You _ play like that any more.
