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 toget her. 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 [例句] Our head teacher treats us as if we were her own children, so all the students in our clas s thinkhighly 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 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]
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 [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 could have done "本来可以……"(表示过去没有实现的可能)。 It's high/about time that somebody did (should do) (should 通常 不省略) …早就该……
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"(但是已经做过了) would rather have done "当时宁愿做了某事"(实际没有做过);否定式 would rather not havedone 表达相反意思，两者都有表示"后悔"之意。 句型 6 as, though, although 引导的让步状语从句。 [注意]although 位于句首;though 位于句首或句中;as 位于句中=though。 它的词序是把 句中强调的形容词、副词、动词或名词放在连词前。[参考倒装结构] 请注意下列句式的变 化： [例句] 1. Although/Though I'm young, I already know what career I want to follow. →Young as/though I am, I already know what career I want to follow. 我虽然年轻，但我已经明白我应该追随什么样的事业。 2. Although/Though I respect him very much, I cannot agree with his idea. →Much as/though I respect him, I cannot agree with his idea. 虽然我很尊重他， 但是 我不同意他的观点。 3. Although/Though he is a child, he knows a lot of Chinese characters. →Child(省略冠词)as/though he is, he knows a lot of Chinese characters. 他虽然还是 个孩子，却认识了许多汉字。 4. Although he tried, he couldn't solve the problem. →Try as he might, he couldn't solve the problem. 尽管他努力了，但是他没有解决问 题。 5. Although it is raining, I'm going out for a walk. →Raining as it is, I'm going out for a walk. 天虽然在下雨，我还是要出去散步。 6. Strange as it may seem, nobody was injured in the accident. 这次意外虽然显得不 可思议，却没有人受伤。 7. Much as I would like to help, I have a lot to do. 虽然我很想帮助你，但是我有很多 事要做。 8. Object as you may, I will go. 纵使你反对，我也要去。 句型 7 [例句] The roof fell before he had time to dash into the room to save his baby. 他还没有来得及冲进房间救孩子，房顶就塌了。 He ran off before I could stop him. 我还没有来得及阻止，他已经跑了。 …before…特殊用法(1)"没来得及……就……"
To my great disappointment, my favorite singer left the concert before I could have a wo rdwith her. 让我非常失望的是，我还没有来得及和我最喜欢的歌手打招呼，她就已经离开了。 句型 8 才……" [例句] They walked about fifty miles to the west before they saw a village. 他们西行 50 英里才看到一个村庄。 The workers worked day and night about three days before everything returned to norm al. 工人们连续工作 3 天才使一切恢复正常。 He almost knocked me down before he knew it. 他几乎撞到我了才意识到。 We had walked a long way before we found some water. 我们走了很长的路才找到一点水。 Five years went by before I knew it. 不知不觉，五年过去了。 句型 9 It was + 时间段+before…."过了多久才(怎么样)……" It was not long before…."不久，就……" It will (not) be +时间段+before…."要过多久(不久)……才……"(before 从句谓 语动词要用一般时态) [例句] It was not long before he sensed the danger of the position.不久他就意识到他处境 的危险。 It was five days before he came back. 五天后他才回来。 It will be half a year before you graduate from the school. 再过半年你才能毕业。 It will not be long before they understand each other. 他们大概不久就会互相了解。 句型 10 in case of…(+n.) "以防;万一"; in case that…"以防，万一……"(谓语动词用一般现在时态或 should+动词原形) [例句] In case of fire, what should we do? Please remind me about it in case I forget/should forget. 万一我忘了，请提醒我。 In case (that) John comes/should come, please tell him to wait. Please take your umbrella in case (that it rains/should rain).带上雨伞，以防下雨。 …before…特殊用法(2)"过了多久才……"或"动作进行到什么程度
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