(
课件网) Unit 8 语法知识精讲 1 | as if引导的从句 We are using resources as if we had two planets, not one.我们正在使用资源,就好像我们有 两个星球,而不是一个。 情景导学 He looks as if he is going to cry.他看上去好像快要哭了。(陈述语气) The teacher treats her students as if they were her own children.这位老师对待她的学生就像他 们是她自己的孩子一样。(与现在事实相反) It was John who broke the window. Why are you talking to me as if I had done it 是约翰打破了 窗户。为什么你跟我说话的口气就好像是我做的似的 (与过去事实相反) 结构 He keeps talking, as if he would never stop.他一直在说,就好像永远不会停了似的。(与将来事 实相反) 用法归纳 as if=as though意为“似乎,好像”,常引导状语从句或表语从句。 (1)如果as if/though引导的从句表示的情况是真实的或极有可能发生,从句要用陈述语气。 (2)如果as if/though引导的从句只是表示一种假设的情况,从句要用虚拟语气,其形式如下: ①表示与现在事实相反的假设,从句谓语用 (从句中be动词常用were); ②表示与过去事实相反的假设,从句谓语用 ; ③表示与将来事实相反的假设,从句谓语用“would/could/might+动词原形”的形式。 一般过去时 过去完成时 2 | 动词+宾语+宾语补足语 Well, say you leave the tap running while you brush your teeth, leave a light on when you go out or you drop a piece of litter and can't be bothered to pick it up.好吧,比方说你刷牙的时候让 水龙头开着流水,出门的时候开着灯,或者你掉了一块垃圾,却懒得将它捡起来。 (教材P31) 情景导学 Just a few more questions, then we'll leave you in peace.就再多问几个问题,然后我们就不打扰 你了。 Although she is in her sixties, her grandchildren keep her young.虽然她已经六十多岁了,但她的 孙子孙女仍然让她保持年轻。 She heard the clock strike at midnight, and fell asleep after a while.她听到了午夜钟响,过了一会 儿她就睡着了。 结构 When he came to life, he found himself tied to a tree, unable to move at all.当他苏醒过来时,他 发现自己被绑在一棵树上,一点也动不了。 用法归纳 ①常见的用于“动词+宾语+宾补”结构的动词有使役动词(如make、leave、have、 keep、let等)和感官动词(如hear、see、notice、observe、feel、watch等)以及动词find。 ②常见的可以用作宾补的有名词、 、现在分词(短语)、 、副 词、介词短语、不定式(短语)等,对宾语进行补充说明。 ③在make、have、let、see、hear、watch、notice、observe等词后用不定式(短语)作宾补时, 应用 的不定式(短语)。 ④根据句意和语境的需要,一个句子中可以出现多个宾语补足语。 形容词 过去分词（短语） 不带to 3 | there be句型 Although there seemed only a slim chance that the trees could survive, the difficulty did not prevent her from trying.虽然看起来这些树能活下来的可能性很小,但困难并没有阻止她尝 试。 (教材P109) 情景导学 There is a pot and several piles of papers lying randomly on the desk.有一个罐子和几摞文件随 意地放在桌子上。 Though we have solved so many problems, there always seem new problems to occur.虽然我们 已经解决了这么多问题,但是似乎总会有新的问题出现。 There still exist some difficult problems in dispute, which need further discussion.仍存在一些在 ... ...
