asif用法归纳

1、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 rai n.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

2、们 讲话就像个大人一样。2 as if 从句的语气及时态 as 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。as 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 didnt care. '你看上去好像并不在乎。When a pencil is partly in a

3、 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 liste ned as if she had bee n 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 opene

4、d 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 lef

5、t 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-suncloud-rain-wind-taste-dream-icegreed-fat-

6、foghealthwealth4. But the onemillion people of the city, who thought little ofthese eve nts, were aslee p as usual that ni ght.think of想起，考虑think little of不重视，忽视 think nothing of 认为没什么thi nk badly/poorly /ill of对看法不好，评价很低thi nk well/much / highly/a lot/ a great deal of 对重视 / 高度评5. It seemed as if th

7、e world was at an end.at an en d= fini shed 结束，终结（作表语） We were very happy whe n 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/ fin ally1. Wash your hands at the end of _ the exp erime nt.2. How many English words had you learned by the end

8、 of_ lastterm?3. He tried various jobs and_in the end _ became a teacher.7.ln fiftee n terrible sec onds 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laylaidlaidlayi ng及物动词躺;位于lielaylainlyi ng不及物动词说谎lieliedliedlyi ng不及物动词His sudde n death wa

9、s a great shock11.shockn.震惊 打击to his family.shock vt.使震惊使震动Peo pie were shocked (shock).我们对这个消息感到震惊。We were shocked at the n ews.The n ews is shock ing (shock)表示情感的动词excite, surprise, interest, bore, move, shock,disa ppoint, satisfy,变为形容词时可加ing(指物)或加ed (指人)at an end=短语句型过关burst into sth. = burst out doing It