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1、Book II Unit3 putersBook II Unit3第5课时 阅读2【考点要求】把握固定短语和句式的用法。【教学目标】把握固定短语和句式的用法。根底学问过关3. vi.消失；发生 4. adj.电子的5. n.外观；外貌；消失6.n.性格；特点7. n.教练重难点过关I devebped very slnwiy 京rid took nearly two hundred years before I was built as an analytical machine by Charles Babbage.我发育缓慢,差不多到了两百年之后,查尔斯巴比奇才把我制成了一台分析机。【要点
2、提炼】句中before引导时间状语从句,意为“之后才。另外before除了其根本意思“在之前以外，还可以表示“没来得及；以免；免得之意。(1)“1亚5+时间段+改砧.表示“过了多久才。从句常用一般过去时。(2)ccIt was not long before.，z意为“不久就。从句常用一般过去时。(3)C4It will not be long before./表示”不久就会。从句常用一般现在时。(4)“It will be+时间段+ before.表示“要过多久才。从句常用一般现在时。e.g.They walked a long way before they arrived at thei
3、r destination.他们走了很长的路才到达目的地。X即学即练I could say a word,he had rushed out of the classroom.我还没来得及说句话，他就冲出了教室。It was three days he came back.过了三天他才回来。It was not long he got a rise in the pany.不久他在公司就升了职。2.As time went by,I was made smaller.画著时间的推移,我被做得更小了。【要点提炼】句中as为连词，意为“，引导时间状语从句。as用作附属连词，表示“既然，由于，引导缘
4、由状语从句。(2)as用作附属连词，表示“虽然，引导让步状语从句，只用于倒装语序，即把作表语的形容词、 名词或作状语的副词以及动词原形置于句首。as用作关系代词，引导定语从句,可放于句首、句中或句末。X拓展：as与with二者都有“随着的意思。as是连词，引导时间状语从句；with是介词,后面接名词或代词,构成with短语或复合结构。X即学即练As time,it*s getting warmer and warmer.As housing price =With housing price随着时间的推移,天气变得越来越温和了。(go) up fast,ordinary people find
5、 it harder to afford one.(go) up fast,ordinary people find it harder to afford one.随着房价的快速攀升,一般人发觉买一套房子更难了。 were both tired,lets just grab a takeaway.我们俩都累了，来吃点外卖食品吧。Try she might,Sue couldnt get the door open,无论苏怎样努力，她就是打不开门。3.Over time my memory has developed so much that,like an elephant,! never
6、forget anything I have been told!随着时间的推移,我的记忆力量开展得如此之快,就像一头大象一样,我从来不会遗忘告知我 的任何事情！【要点提炼】本句为主从复合句。主句是my memory has developed so much； that引导结果状语从句，其中I have been told是省略关系代词that的定语从句，修饰先行词anything0 sothat如止匕以至于(l)sothat常用结构如下：adj J adv.、many/few+复数名词so+(2)suchthat“如此以至于也可用来引导结果状语从句。such为形容词，一般用来修饰名词，常构
7、成如下结构：ja/an+她.+单数可数名词1such+i j、_J+thatadj.+复数名词/不仃数名词J(3)在sothat句式中，假如that引导的是目的状语从句,那么从句中多含有情态动词，如 may,might,can,could等。so that引导目的状语从句,有同样用法。 X即学即练He drawsbeautifully his drawings are all liked by others.他画得很美丽，别人都喜爱他的瓦Jack is so smart a boy he can work out many difficult math problems.杰克真是个聪慧的男孩兀疝赢出很多数学难题。He was an honest manso many people praised him.他特别老实，因而这么多的人表法正一