精讲课 笔记随视频锁定
不同时态的推测(注意一般过去时表推测的结构)

右侧笔记支持独立滚动。边听名师连读拆解，边对照右侧的语法事实与统计数据笔记。

一般现在时态的推测
情态动词 + be + 非动词 情态动词 + 动词
must be… 肯定是 This structure must be stable. must … 肯定是 Claire's car wasn't there, so she must have gone to her mother's.
can’t be… 不可能 I can't be in two places at once. can’t … 不可能 He can’t know that.
may be… 可能是 The horse may be nervous of cars. may … 可能是 I may be back next year.
一般过去时态的推测(借用现在完成时)
情态动词 + have been + 非动词 情态动词 + have + done(过去分词)
must have been… 那时肯定是 He must have been tall when he was young. must have … 那时肯定… He must have played basketball well when he was young.
can’t have been… 那时不可能是 He can’t have been rich before. can’t have … 那时不可能… He can’t have made a lot of money before.
may have been… 那时可能是 She may have been scarred for life. may have … 那时可能… He may have put pressure on her to agree.
现在进行时态的推测 过去进行时态的推测(借用现在完成时)
must be doing… 此刻肯定正在… He must be sleeping now. must have been doing… 那时肯定正在… She must have been studying all night.
can’t be doing…此刻不可能正在… He can’t be studying now. can’t have been doing…那时不可能正在… I can’t have been dreaming at class.
may be doing…此刻可能正在… They may be shredding documents. may have been doing…那时可能正在… She may have been waiting for you at the cafe.
在英文中一般不会使用【现在完成时】来表推测，因为现在完成时是已完成，既然已完成就无需再推测。