(完整word)asif用法归纳-推荐文档.doc

完整word)asif用法归纳-推荐文档as if 用法归纳1． as if 从句的作用as if一般可由as though来代替引导表语从句，可在look, seem等系动词后如：He looked as if / though he was ill. 他看起来好像生病了It seems as if it is going to rain.看来好像要下雨了引导方式状语从句如：I remember the whole thing as if / though it happened yesterday. The child talked to us as if he were a grown-up. 那个小孩跟我们讲话就像个大人一样2． as if 从句的语气及时态①as if从句用陈述语气当说话者认为句子所述的是真实的或极有可能发生或存在的事实时， It sounds as if it is raining. 听起来像在下雨He talks as if he is drunk. 从他说话的样子来看他是醉了②as if从句用虚拟语气 当说话人认为句子所述的是不真实的或极少有可能发生或存在的情况时，表示与现在事实相反，谓语动词用一般过去式。

如：You look as if you didn’t care. 你看上去好像并不在乎When a pencil is partly in a glass of water, it looks as if it were broken． 表示与过去或与谈话时间为止发生的事实相反，谓语动词用“had +过去分词”如：He talked about the Great Wall as if he had been there before.说起长城来好像他以前去过那里The girl listened as if she had been turned to stone.女孩听着，一动也不动，像已经变成了石头表示与将来事实相反，谓语动词用“would / could / might + 动词原形”如：He opened his mouth as if he would say something. 他张开嘴好像要说什么It looks as if it might snow. 看来好像要下雪了3． as if从句中的省略如果as if 引导的从句是“主语+系动词”结构，可省略主语和系动词等成份，这样as if 后就只剩下名词、不定式、 形容词（短语）或动词-ing形式等。

He acts as if (he was) a fool. 他做事像个傻子He paused as if (he was going) to let the sad memory pass. The girl left the room hurriedly as if (she was) angry.女孩匆忙离开房间，好像生气的样子From time to time, Jason turned round as if (he was) searching for someone.词汇学习1. A smelly gas came out of the cracks.smelly : smell+ y = adj. smell n./v (smelt/ smelled) 扩展: n.+y构成形容词 blood---- mud---- sun----- cloud---- rain---- wind--- taste---- dream---- ice---- greed---- fat---- fog----- health→ wealth → 4. But the one million people of the city, who thought little of these events, were asleep as usual that night.think of 想起，考虑think little of 不重视，忽视 think nothing of 认为没什么think badly/poorly /ill of 对……看法不好，评价很低think well/much / highly/a lot/ a great deal of 对……重视/高度评价5. It seemed as if the world was at an end.. at an end= finished 结束，终结（作表语） ★ We were very happy when the work was at an end.★at the end of “在…尽头；在…末” ★by the end of “到/截止……末”；主句一般用完成时 ★in the end 意思“最后、终于”= at last/ finally 1. Wash your hands at the end of_ the experiment.2. How many English words had you learned by the end of_ last term?3. He tried various jobs and_in the end_ became a teacher. fifteen terrible seconds a large city lay in ruins.在可怕的15秒钟内，一座大城市就沉沦在一片废墟之中。

lie( lay lain) 处于某种状态;躺，平躺，平卧 平放中文原形过 去 式过去分词现在分词说明放置产卵laylaidlaidlaying及物动词躺;位于lielaylainlying不及物动词说谎lieliedliedlying不及物动词 n.震惊 打击 His sudden death was a great shock to his family.shock vt. 使震惊 使震动People were shocked (shock).我们对这个消息感到震惊We were shocked at the news. The news is shocking(shock)表示情感的动词 excite, surprise, interest, bore, move, shock, disappoint, satisfy,变为形容词时可加ing(指物）或加ed (指人）短语句型过关burst into sth. = burst out doing It seemed as if at an end= finished think well / highly of in ruins It is no wonder (that )= No wonder (that) all…not … = not all…该句为部分否定be buried in…= bury oneself in…5。