句型1

　　would rather that somebody did…“宁愿……;更愿意……”(表示现在或将来的愿望)

　　would rather that somebody had done…“宁愿……;更愿意……”(表示过去的愿望)

　　[例句]

　　I’d rather you posted the letter right now. 我想让你现在去寄信。

　　I’d rather you were not a celebrated actor. In that case, we could spend more time together.

　　我到情愿你不是个知名演员，这样我们可以有更多的时间在一起。

　　I’d rather that I hadn’t seen her yesterday. 我情愿昨天没有看到她。

　　句型2

　　as if/though+主语+did/had done…好像……(表示现在或将来的情况用过去时;表示过去的情况用过去完成时)[参考句型4]

　　[例句]

　　Our head teacher treats us as if we were her own children, so all the students in our class think highly of her.

　　Alan talked about Rome as if he had been there. Alan谈起罗马来就好像他去过那里似的。

　　句型3

　　“wish +宾语从句”，表示不大 可能实现的愿望

　　表示现在的愿望：主语+过去时;

　　表示过去的愿望：主语+had done;

　　表示将来的愿望：主语+would/could do

　　[例句]

　　How I wish we students had more free time to relax ourselves! 我们学生多么希望有更多的自由时间放松自己!

　　I failed in the maths exam. How I wish I hadn’t wasted so much time playing!

　　What a pity you can’t go to the party. How I wish I could dance with you at the party!

　　句型4

　　It’s high/about time that somebody did (should do) (should通常不省略) …早就该……

　　[例句]

　　It’s time that you went to school.= It’s time that you should go to school.

　　It’s high time that we did something to improve our environment. 该是我们为环保做些事情了。

　　I think it’s high time that she made up her mind. 我想她该拿定主意了。

　　句型5

　　情态动词+动词不定式完成结构的用法

　　❶ could have done “本来可以……”(表示过去没有实现的可能)。

　　❷ 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。

　　❸ should/ought to have done “本来该做某事”(而实际未做)

　　❹ should not/ought not to have done “本来不该做”(实际却做过了，含有责备语气)

　　❺ needn’t have done “本来不必做”(但是已经做过了)

　　❻ would rather have done “当时宁愿做了某事”(实际没有做过);否定式would rather not have done表达相反意思，两者都有表示“后悔”之意。