He be Curnane!He be thinking.He be a common boy.情情态动词态动词表推表推测测mustmightcant表推测 的三种句式The light is on, so somebody _ be at home. mustThe light is on, so my sister _ be at home. may/ might 1. 在肯定句中一般用must, may/ might ,语 气逐渐 减弱。常用于表推测 的情态动词will wouldought toshould(一定)(可能)(很有可能)(很有可能)(应该 ,很有可能)(应该 ,很有可能)(可能)(可能)(可能)肯定推测最 强最 弱mustmightcancouldmayIts sunny. It _ rain. cant表推测 的三种句式 2. 在否定句中用cant/ couldnt( 不可能) ,may not/ might not( 可能不) 。He _ know how to answer this question. /might not may not常用于表推测 的情