have (has) been to:去过某地(表示某人的一种经历),可以和once, twice, often, never, ever 连用。 have (has) gone to:去某地了(表示某人已经离开此地,在去某地的路途上或已在某地,所以一般来说此句型只用于第三人称),此句型不能与上述时间状语连用。 (1)He has gone...
D. had been taught 答案:C 15.Smith is to study medicine as soon as he ___ military services. A. will finish B. has finished C. finish D. would finish 答案:B 16. Please be sure to telephone me the next time you ___. A. will come B. would come C. sha...
4、You ___ be tired – you’ve only been working for an hour. A. must not B. won’ t C. can’ t D. may not 5、Sorry I’m late. I ___ have turned off the alarm clock and gone back to sleep again. A. might B. should C. can D. will 二、六个结构 (一)要...
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