must 肯定、may 可能 大、might 小、may not 可能不 might not can't 不可能、couldn't + do(be) 现在或将来 have done 过去 (二)三级试题汇编 1、The house is dark; the Browns ___ to bed. A. may go B. should go C. should have gone D. must have gone 2、—Tha...
9. We feel you should not have done that. (page 24) 我们觉得你真不应该这样做。 should/ ought to have done sth 意为“本来应该干……,但未……” shouldn’t/ oughtn’t to + have done sth “本来不应该做……却做了” I wonder why she hasn’t written to us...
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