15. 将来完成时(will have done) ① 表示一个动作到将来某个时间为止已经完成,强调对将来那个时间产生的影响。 例:Pick me up at 8 o clock,I will have had breakfast by then. 早上8...
A. will do B. to do C. shall we do D. to be done 2、The mother didn’t know ___ to blame for the broken glass as it happened while she was out. A. who B. when C. how D. what 其他真题选编 1、There isn’ t any difference between the two. I really don...
might have done "本来可能……;本来应该或可以做某事"(实际没有发生;含有轻微的责备语气。 should/ought to have done "本来该做某事"(而实际未做) should not/ought not to have done "本来不该做"(实际却做过了,含有责备语气)needn't have done "本来不必做"(但是...
4) 情态动词没有非谓语形式,即没有不定式,分词,等形式。 比较can 和be able to 1)can could 表示能力;可能(过去时用could), 只用于现在式和过去式(could)。be able to可以用于各种时态。They will be able to tell you the news soon.他很快就能告诉你消息了。 2)只用...
When you have finished the report, I will have waited for about 3 hours. 等你完成这份报告的时候,我就已经等了将近3个小时了。 2. 现在进行时(am/is/are doing) ①表示此时此刻正在发生的事情。 例:He is listning to the music now.
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