clear意为“明白的, 清楚的”. 指不模糊含混, 易于观察, 了解和识别 3.What could have happened? Something terrible must have happenedif Li Chang ? ◇ couldhave done 会发生什么呢? musthave done 准/定是发生了?, 这两句是由情态动词+完成时结构,构成的虚拟语...
成人高考学位英语备考练习:非谓语动词 一、不定式 (一)基本结构 to do to be doing to have done to be done to have been done 学位英语真题汇编 1、Judging from his manners at the party, he does
We must take steps to solve the problem. Steps must be taken to solve the problem. Something must be done to solve the problem. 5.要有主题句 The museum's promotion of cultural and creative products makes sense in the following aspects...
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、—...
2.if… if only… It’s not bother if you… 3. should have done… shouldn’t have done… could have done… 如果句中出现I should have done this,那么答案一定是I didn’t do this. 反之亦然。 4.must be… must have done…(表推测的为例外,它应该选与所听相同...
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