1、Welcome to my class 民勤职专 李晓华辨别下列从句类型1.I think he is right.2.That is why he is late for school.3.The boy who plays basketball is my brother.4.This is the farm where I worked.5.He didnt go home before he finished his homework.6.If it rains tomorrow,we will not go to the zoo.状语从句是指句子用作状语时起副词作用的句状语从句是指句
2、子用作状语时起副词作用的句子。一般可分为八大类，分别表示为：子。一般可分为八大类，分别表示为：时间状语从句时间状语从句 条件状语从句条件状语从句 原因状语从句原因状语从句 结果状语从句结果状语从句 目的状语从句目的状语从句 让步状语从句让步状语从句 比较状语从句比较状语从句 地点状语从句地点状语从句常用引导词：常用引导词：_,_,_,_ _._,_,_,_,_.1.I will call you as soon as I arrive in Beijing.2.He had learned a little Chinese before he came to China.3.I will te
3、ll him everything when he comes back.4.Dont get off until the bus stops.5.I have worked in this school since I graduated from Beijing University.when as while as soon as ,while before after since till until 常用引导词：常用引导词：要点：引导条件状语从句的连词有要点：引导条件状语从句的连词有if（如果）、（如果）、unless（除非）等，（除非）等，unless在意义上相当于在意义上相当于i
4、fnot。条件状语从句也像时间状语从。条件状语从句也像时间状语从句一样，如果主句用将来时，从句要用现在时代替将来时。如：句一样，如果主句用将来时，从句要用现在时代替将来时。如：You will fail_ you study hard（You will fail if you dont study hard）除非你努力学习，否则你会失败。）除非你努力学习，否则你会失败。if unless as long as once1.I will help you with your English if I m free.2.Once you remember the words，English is
5、easy.3.As long as you are happy，I will be happy.4.Unless you put on a coat，you may catch a cold.you do more exercise，you will be healthy He wont be here hes invited Maths is very easy to learn you understand the rules1.He didnt go to school because he was ill2.Since you cant answer the question Ill
6、ask someone else3.As he is no car,he cant get there easily常用引导词：常用引导词：_,_,_because since as比较比较:because常回答常回答why引导的疑问句，该从句一般位于主句后；引导的疑问句，该从句一般位于主句后；since比比as正式，两者不回答正式，两者不回答why引导的问句，而且其从句一般放在引导的问句，而且其从句一般放在句首。如：句首。如：1.Why cant I go？为什么我不能去？为什么我不能去？_ youre too young因为你年纪太小了。因为你年纪太小了。2._you are not fe
7、eling well，youd better stay at home 既然你不太舒服，还是留在家里的好既然你不太舒服，还是留在家里的好。3、原因状语从句1 -“why did Lilei use a pencil”-his pen was broken2.we have no money，we cant buy it 3.he has no car，he cant get there easilyExercise：1.I havent heard from him he went to American2.I will tell him the news he comes back3.He
8、will not go to the cinema he is very busy4 it rains tomorrow，we will not go to the zoo 5.Dont leave the room you have finished the text6.Id like to go swimming the water is not too cold7.no one is against it，lets carry out our plan8.You will be late you leave immediately。常用引导词：常用引导词：_ _,_ _.so that
9、such that1 He got up so early that he caught the first bus.2 Its such a good chance that we must not miss it.3 He spoke so fast that I couldnt follow him 常用引导词：常用引导词：_ _,_ _ _so that in order that1.We get up early so that we can catch the first train 2.They used the computer in order that they might
10、 save time常用引导词常用引导词：though although even if even though no matter 1.Although its hard work，I enjoy it2.No matter what my brother wants,my father will give him3.We wont give up even if we fail many times 常用引导词常用引导词:as(同级比较同级比较),than(不同程度的比较不同程度的比较)The more,the more.She is as bad-tempered as her moth
11、er.The house is three times as big as ours.The more you exercise,the healthier you will be.常用引导词：常用引导词：Where wherever,anywhere,everywhere 1.Air will be heavily polluted where there are factories.2.Wherever you go,you should work hard.3.Where there is a will，there is a way4.Wherever you go，I go too 1
12、 It is 50 years the Peoples republic of China was founded A after B before C when D since2 The volleyball match will be put off it rains A even if B so that C if D when 3.You will be late you leave immediately A unless B until C if D or【考点考点1】区分区分when，if引导宾语从句和状语从句的不同：引导宾语从句和状语从句的不同：when引导时间状语从句意为引导
13、时间状语从句意为“当当时候时候”，引导宾语从句，引导宾语从句意为意为“什么时候什么时候”；if引导条件状语从句意为引导条件状语从句意为“如果如果”，引导，引导宾语从句意为宾语从句意为“是否是否”。如：。如：1Mike wants to know if _ a picnic tomorrow YesBut if it _ ，well visit the museum instead Ayou have；will rain Byou will have；will rain Cyou will have；rains Dwill you have；rains 2Do you know when he
14、_ back tomorrow？Sorry，I dontWhen he _ back，Ill tell you Acomes；comes Bcomes；will come Cwill come；comes Dwill come；will come 答案答案1】1C 2C:1）It _ ten years since they _ to France.Aas；covered Bwas；have moved Cis；have moved Dis；moved 2）He _ wait until the rain _ Awont；will stop Bwont；stop Cwill；stops Dwi
15、ll；will stop 3）He will go to the Great Wall if it _ tomorrow Awont rain Bdoesnt rain Cdont rain Disnt raining 4）_ you eat old food，you may be ill ABefore BWhy CIf DWhich 5）Jack runs as _ as Tom Afast Bfaster Cfastest Dmuch f6）30，000dollars is a large amount of money，but its _ than we need Afor moreB
16、very much Cfar less Dvery little 答案答案:1)D 2)C 3)B 4)C 5)A 6)C7）Miss Gao asked a question，but it was _ that nobody could answer it Avery difficult Btoo difficult Cdifficult enough Dso difficult 8）I cant understand this passage _ there are no new words in it Aif Bbecause Cthough Dand 9）“Why did Li Lei
17、 use a pencil？”“”“_ his pen was broken”ABecause BWhen CUntil DIf 答案答案:7)D 8)C 9)A 时间状语从句 关联词 as/when/while;after;before;since;till/until whenever;no sooner than/hardly when 副词immediately;名词短语the moment;the minute;the second;each(every)time;the day(year);next time;the first(second/last)time;by the ti
18、me 条件状语从句if;unless;as(so)long as;原因状语从句because;as;since;now(that)结果状语从句so(such)that.目的状语从句so that;in order that;让步状语从句though;although;as;however;no matter.;疑问词+ever；比较状语从句than;as(so).as;the more.the more 地点状语从句where wherever1)when，while，as的区别：的区别：三者均可表示三者均可表示“当当的时候的时候”，如果主句表示的是短暂的动作，如果主句表示的是短暂的动作，而从
19、句表示的是一段时间，三者可通用。而从句表示的是一段时间，三者可通用。as和和when都可与终止性动词连用，都可与终止性动词连用，while只能与延续性动词连只能与延续性动词连用。如：用。如：It was snowing _ we got to the airport当我们到达机场时，当我们到达机场时，天正下着雪。（不能用天正下着雪。（不能用 while）as强调主句与从句表示的动作同时发生；强调主句与从句表示的动作同时发生；while强调主句表示的强调主句表示的动作持续于动作持续于while所指的整个时间内；所指的整个时间内；when可指主、从句所述动作可指主、从句所述动作同时或先后发生。如：同时或先后发生。如：He sang as he went along他边走边唱。他边走边唱。Please write_ I read我读的时候，请写下来。我读的时候，请写下来。_ he reached home，he had a little rest回到家后，他休回到家后，他休 息了一会儿。息了一会儿。
