could might must 后需要加be吗?例如,Is the man running for exercise (might)---The man might be running for exercise.那么,Is the strange creature an alien (could)该怎么改?Is she looking for something (must )怎么改?Dose gesture mean "hel

could might must 后需要加be吗?例如,Is the man running for exercise (might)---The man might be running for exercise.那么,Is the strange creature an alien (could)该怎么改?Is she looking for something (must )怎么改?Dose gesture mean hel can,might,may,could,must的用法 must,might,could,can't的区别 can,might,may,could,must的用法 must ,might ,could ,can't的用法? 分析一下can may must could might could have分析一下can may must could might could have done might have done等 might、may,could和must 表猜测的区别? can、could、may 、might、must、ought 的区别和用法 should,must,can,may,shall,could,might的用法 could/might/may/would/must/should have+过去分词 must might could can't表猜测的用法 有谁能告诉偶must.could.might.can't的意义? must can may could might语气强弱顺序是什么 must,can,could,may,might表示推测,哪些用于否定句,请举例说明 must,can,could,may,might表示推测,哪些用于疑问句,请举例说明 must,can,could,may,might表示推测,哪些用于肯定句,举例说明 怎么回答以can,may,must,could,might,would这些开头的问句? could have/might have /must have/should have都有什么区别