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1、初二英语复习课教案复合句状语从句一、复习目标：（1）掌握状语从句的作用。2）掌握状语从句的意义。（3）掌握各种不同类型的状语从句。二、知识要点：状语从句在句中作状语，修饰句中的动词、形容词或副词等。状语从句由从属连词作关联词，从属连词在从句中不充当句子成分。状语从句在主句之前，一般要用逗号分开，朗读时用升调。状语从句在主句之后，一般不用逗号，朗读时用降调。状语从句按其意义和作用可分为时间、条件、原因、让步、目的、结果、方式、比较、地点等类型。1.时间状语从句 (1)常用的连词有 when（当时候），while（当时候）,before(在以前)，after（在以后），until(till)（直到
2、为止）,since（自从以来）,as soon as（一就）等。(2)时间状语从句中一般不用将来时，若谈论将来的事情，往往用一般现在时代替：如：Ill go on with the work when I _(come)back tomorrow.As soon as he _(finish)the work,he will come to see me.2.条件状语从句常由 if(假如、如果)No matter(不管)来引导，如果主句是一般将来时，从句往往用一般现在时来表示将来。如：Ill go for a picnic if it _(be)fine.No matter what he _
3、(say)，I wont believe him，3.原因状语从句 (1)常由 because,since,as 引导。(2)because 表示直接的原因，着重点在从句，用于回答 why,语气最强。because 不能及 so 连用。since 一般表示对方已知的，无须加以说明的既成事实的理由，全句中心在主句，语气比 because弱，常译为“既然”。as 表示十分明显的原因，一般说明因果关系，着重点在主句，语气较弱。常译为“由于”。for 是个并列连词，只能放在另一个并列分句后面，表示一种推理或解释，或用作附加说明，而不是指理由或原因，语气最弱，一般不放在句首，常译成“因为”。如：_ it
4、 is raining hard,we wont go hiking._ you are ill,Ill go alone.I cant go to school _ I am ill.You havent met him,_ he didnt come here.4.结果状语从句一般由 so.that,such.that 引导，so 及 such 的区别：(1)so形容词a/an名词 (2)sucha/an形容词名词（3）such形容词不可数名词/可数名词复数 (4)somany/much/few/little形容词名词如：Its _ a heavy box that nobody can
5、move it.Its _ heavy a box that nobody can move it.There are _many books in the library第 1 页 5.目的状语从句往往由 so that,引导，如：Ill speak slowly_ you can understand me.6.比较状语从句常由 as.as,than,not as/so.as 等引导。比较从句部分常是省略句，如：Im taller _ he(is).Science is not _ popular _ English.7.让步状语从句由 though 或 although(虽然)等引导，但
6、不能及 but 同时连用，改错：Though it snowed heavily,but they kept on working.8方式状语从句常用 as if,as though（好像）引导。如：He acted as if(though)nothing had happened.9、地点状语从句常用 where,wherever 引导。如：Ill go where work is hard.典型例题解析例 1 The question was _ difficult that nobody could answer_.A.very.them B.very.it C.so.them D.s
7、o.it解析因为句中有 that,所以前面用 so,构成 sothat 从句，而 question 是单数，用代词 it，故选 D。例 2 It was _that he had to ask for help.A.such big work B.so big a work C.so a big work D.such big job解析 work 是不可数名词，指工作或工程，故选 A。例 3 He wont believe it _ he sees it with his own eyes.A.when B.after C.until D.as soon as解析此句是 notuntil,“
8、直到才”。故答案选 C。例 4 Ill go _ with you _ next Sunday.A.hunting.when I will have time B.to hunt.until Im free C.boating.if I have nothing to do D.to boat.as I will not be so busy解析去打猎、划船常用 go hunting,go boating，所以应在 A 和 C 中选择，又因为 when 和 if 在句中引导状语从句时，要用一般现在时表示将来，故选 C。例 5 Its almost three years _ I last sa
9、w her.A.since B.when C.that D.after解析本句表示自从上次见到她几乎有三年了，句型 Its+时间段+since 从句(过去时)，故选 A。三、选讲例题用所给动词适当形式填空例 6 Ill go to Shanghai if I _(have)time tomorrow.And I want to know if you _(have)time to go with me.解析第一句中 if 是“假如”的意思引导状语从句，要用一般现在时表示将来时，第二句中 if 是“是否”的意思，引导宾语从句，仍用将来时。例 7Could you tell me when he
10、_(return)home next week?Sorry,I cant.But I will ring you up when he _(return)home.第 2 页解析第一句中的 when 意思是“什么时候”，引导宾语从句用将来时态，第二句中的 when 是“当时”的意思，引导时间状语从句，用一般现在时表示将来。四、课内追踪练习单项选择 ()1.Jack was tired _he played tennis all afternoon.A.if B.as soon as C.because D.before ()2_ he finished his work,he left hur
11、riedly.A.As soon as B.In order that C.Until D Since ()3._the rain has stopped,lets start again.A.For B.Because C.Since D What ()4.He started early _ he could get there before nine.A.so that B.because C.so as to D.in order to ()5.They waited _ it was dark outside.A.since B.until C.so D.while五、复习小结 1.
12、牢记引导各类状语从句的连词及它们的不同意义和作用。2.注意区别 when（什么时侯）引导宾语从句、（当时）引导状语从句；if（是否）引导宾语从句、（假如）引导条件状语从句；sothat、so that、suchthat 3.注意用一般现在时表示将来的几种句式。六、巩固练习一、单项选择 ()6.Mike is _ boy that we all like him.A.a good so B.so good a C.a such good D.such good a ()7.It was _that they wanted to go for a picnic in the country.A.s
13、uch a fine weather B.so fine a weather C.a fine weather so D.such fine weather ()8.Ships are_ than planes that few people take them on business.A.too much slower B.very much slower C.so much slower D.much more slower ()9.They had started harvesting rice _ the rain began.A.after B.before C.since D.as
14、二、在下列各句中填入适当的状语从句连词，使句子意思完整、通顺 10 I will tell you the secret_ you dont tell anyone else about it.11 Mary always takes a seat in the first row _she can hear better.12.We didnt notice anything wrong with the computer _we started using it.13.The young doctor was a bit worried _ it was his first time to
15、 operate on a patient.14 The elephant has _strong a body _it can do heavy work for people.15.It is _ a difficult problem _ nobody can work it out.第 3 页三、句型转换 16 Use your head,then youll find a way._ you use your head,youll find a way.17 I went to bed after my father came back home yesterday.I _ go t
16、o bed _ my father came back home yesterday.18 The island is so beautiful that it can attract large numbers of people.The island is beautiful _ _ attract large numbers of people.19 My dress is more expensive than Lilys.Lilys dress is _ _ expensive as mine.20 My sister is so young that she cant go to school.My sister is _ young _ go to school.第 4 页