Unit 8 It must belong to Carla.单元语法聚焦 ( 八 ) 情态动词表示推测情态动词 can , could , may , might , must 都可以表示推测,表示说话人对事情发生的可能性的推测。其结构为“情态动词+动词原形”。 eg : He must stay there. 他一定待在那里。情态动词表示推测时,肯定句一般用 must be( 一定是,肯定是 ) ,might/could be( 可能是 ) ;否定句用 can't be( 不可能是 ) ;疑问句用 can 。1 . must 表示对现在的状态或现在正在发生的事情的推测时, must 后面通常接系动词 be 的原形。 eg :You have studied hard for five hours.You must be tired. 你已经学习了五个小时了,一定累了。2 .“ may/might/could”+动词原形 多用于肯定句形式,“其 推测,”判断 的语气不能确定,用 may“”意为 也许;可能 ;用 might 不表示过去时态,只表示语气较 may 更弱,“”意为 或许;大概 。 eg :I don't know where she is.She may be in New York. 我不知道她在哪儿,可能在纽约。The guitar might be Jane's.She plays the guitar. 这把吉他可能是简的。她弹吉他。It could be Mei's hair band. 这可能是梅的发带。3 .“ can/could not”+动词原形 用于否定句或疑问句中,“表示 否定推测或判”断 ,“”有 不可能 之意。用 can't 还是用 couldn't 没有时态差异,只是 can't 的语气较 couldn't 强。 eg :There is no light in the room.She can't be at home now. 房间里没有灯光。她现在不可能在家里。一、选词填空。 must,may,might,can't 1 . The textbook be Li Ming's.It has his name on it.2 . The beautiful trousers be Jim's.They are too long.3 . The large shoes be Mary's.She has small feet.4 . The football be Wei Hua's or Tian Hui's.They both play football.5 . The guitar belong to Sam.He often plays the guitar.mustcan'tcan'tmight/maymust二、单项选择。( )6.—I still haven't found my pet dog.(2016· 武汉 )—I'm sorry to hear that.You ________ be very sad.A . may B . must C . should D . can't( )7.—Who's singing in the garden?—It ...