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1、句子类型句子类型一、简单句:一、简单句: 简单句简单句是指由一个主语(或并列主语)一个主语(或并列主语)和一个谓一个谓语(或并列谓语)语(或并列谓语)构成的句子。二、二、复合句: 复合句是指由一个主句一个主句和一个一个或一个以上的从句一个以上的从句构成的句子。从句分为宾语从句、状语从句、定语从句。如:如:I get up at six in the morning. My mother and I often go shopping. we sing and dance happily everyday(一)什么是状语从句(一)什么是状语从句状语从句在复合句中作状语状语从句在复合句中作状语,来
2、说明来说明一件事情发生的时间一件事情发生的时间,地点地点,原因原因,条件条件,结果等结果等.(二)状语从句的分类:(二)状语从句的分类:时间,地点,条件,原因,让步时间,地点,条件,原因,让步,目目的,方式,结果,比较的,方式,结果,比较二、状语从句:二、状语从句:1 1、引导、引导时间状语时间状语的从属连词的从属连词 WhenWhen “ “当当时候时候”, , 从句用一般过去时,主句从句用一般过去时,主句用过去进行时。从句的动词可用用过去进行时。从句的动词可用延续性延续性/ /短暂性短暂性动词。动词。e.g. 她到达车站时,天正在下雨 It was raining when she arr
3、ived at the station.(2) While “正当时”,引导从句时,谓语动词 必须是延续性延续性的,常用进行时。 e.g. 他在读书时不要制造噪音。 Dont make any noise while he is reading.(3) until “直到”,谓语动词是延续性延续性的。的。 not until “直到才”,谓语动词是短暂性短暂性的。的。 e. g. 他经常看书到十一点。 He often reads until eleven oclock. e.g. 直到会议结束他才出现。He didnt appear until the meeting had begun.(
4、4) after “在之后” e.g. 填完这张表格后,请来我的办公室。 Please come to my office after you finish this form.(5) before “在之前” e.g. 你走之前要说再见。Say goodbye before you go.(6) as soon as “一就”,引导的从句常用一般现在时,主句用一般将来时。 e.g. 我一回来就去拜访你。Ill visit you as soon as I come back.2 2、引导、引导原因状语原因状语的从属连词的从属连词(1) because “因为”, 回答why提出的问题。语气较
5、强, 强调说话人认为某一原因是对方不知道、需作陈述的原因。 Why were you late for class today? Because I got up too late. (因为我起床太晚了)(2) since “既然”,用于双方都知道的原因。e.g. 既然他这么说,那一定是真的。 Since he says so, it must be true.(3) as “由于,因为”,相当于since,但语气更弱,用来表示很明显、提一下也就清楚地原因。e.g. 由于天越来越黑,妈妈开始为哥哥着急。Mother began to worry about my brother asIt wa
6、s getting dark.3、引导目的和结果状语的从属连词(2) 结果状语从句:结果状语从句: so + adj/adv + that “如此以至于”。 e.g. 她太累了,不能再走了。 She is so tired that she cant go any further. such + a/an +adj + n + that “如此以致 ” e.g. 天气那么好,许多人都到公园里来玩。 Its a fine day that many people go to the park for fun. such + adj + cn/un + that “如此以至于”(1) 目的状语从句
7、:目的状语从句:so that “为了,以便”e.g.你现在必须离开是为了你能赶上早班车。You must leave now so that you can catch the earlye.g. 他吃了不健康的食品结果他病了 He ate such unhealthy food that he was ill. 4、引导让步状语从句让步状语从句的从属连词 though, although, even though (if) “虽然,尽管”引导让步状语从句时不能与but同时连用。e.g. 尽管雨下得很大,他还是出去了。 Although it rained hard, he still we
8、nt out.e.g. 尽管我有时间,可我并不想跟他去哪。Even though I have enough time, I dont wantto go there with him. 5、引导条件状语从句条件状语从句的从属连词 (1)If 意为意为“如果,假如如果,假如”,表示条件,表示条件,if 引导引导的句子是条件状语从句,用一般现在时态,主的句子是条件状语从句,用一般现在时态,主句则用一般将来时态。也就是所谓的句则用一般将来时态。也就是所谓的“主将从主将从现现”。 If you eat less, you will be thinner. If you work hard, you
9、will be successful. If you come to school late, your teacher will be angry with you.(2) unless “如果不,除非”,= “if not”e.g. 如果他不努力,就不能完成这项工作。He wont finish the work unless he works hard.2. if 条件状语从句中,如果主句有条件状语从句中,如果主句有must,can,may 等情态动词,从句用等情态动词,从句用_。 例如:例如:You must stop if the traffic light _ (be) red.i
10、s一般现在时一般现在时You will miss the bus unless you hurry up If you finish the homework, you can go home 如果你作业做完了就可以回家了。如果你作业做完了就可以回家了。 If you want to lose weight ,you must eat less bread. 如果你想减肥,你必须少吃面包。如果你想减肥,你必须少吃面包。例如:例如: Don t wait for me if I _ (be) late.3. if 条件状语从句中,主句是祈使句,条件状语从句中,主句是祈使句, 从句用从句用_表示将
11、来。表示将来。 _原则。原则。am主祈从现主祈从现一般现在时一般现在时She will be late.If she _ to school, she _ _late. She is going to walk to school.walkswillbeWe will take a trip if it is sunny tomorrow.=If it is sunny tomorrow, we will take a trip.主句在前从句紧跟其后主句在前从句紧跟其后。从句在前时,用从句在前时,用“ ,”与主句隔开与主句隔开。It is going to rain tomorrow. I w
12、ill stay at home. If it _ tomorrow, I _ _ at home. rainswillstayHe wont study hard.He will fail in the exam.“If he _ study hard. He _ _ in the exam.”doesntwillfailIf I get up at 9:00, I will be late.If I am late, my teacher will be angry with me.If my teacher is angry with me, I will be sad.If I am
13、sad, I will cry.用括号内所给单词的正确形式填空。用括号内所给单词的正确形式填空。1. Ill buy a computer if I _ (have) enough money.2. Im sure if he _ (go) to the party, he _ (have) a great time.havegoeswill have3. You _ (not get) nervous if you _ (do ) enough exercise.4. If she _ (finish ) work early, she _ (go) home.5. If it _(rain
14、), we _ (stay) at home.dofinisheswill gorains will staywont get1.If he_ (not, do it ), I_(do) it.2.If you _ (be) late for school ,my teacher _(be) angry.arewill be3 If she_ (win) the prize ,we _(be) happy.winswill be4.If I _ (not,eat )so much , I _(get) thinner.5.If you _(tell) them, they _ (not,bel
15、ieve) you.dont eatwill gettellwont believe6 I _(stay) at home If it _( rain).7.If it _(not,rain) ,I _( go) out.8. we _(play) football If it is _(sun) .9.If she _(become) a star, her parents _ (not,send) her away 10.He _(watch) TV if he _(be) free.will stayrainsdoesnt rainwill gowill playsunnybecomes
16、wont sendwill watchisdoesnt dowill dohttp:/ it rains tomorrow, we _ visit the museum. A. dont do B .wont go C .arent go D. didnt go.2. Will you go to the park if it _ fine? A. will be B. was C. is D /3. If you _to school late, your teacher _ angry with you. A. come; are B. come, will be C. will come
17、; are D. will come; will be4. If you _ hard, you will _ successful. A. work, are B. works, is C. to work, be D. work, be5. If I _ too much TV, my mother will _. A .watch, angry B .watched, be angry C .watch, be angry D .will watch, be angryBCBDCII. 选择选择( ) 1. _ you go to the party, youll have a grea
18、t time. A. As B. Although C. If D. After( ) 2. I dont have to introduce him to you _ you know the boy. A. since B. but C. until D. though( ) 3. Is everybody here today? No, Tom is at home _ he has got a bad cold. A. because B. if C. until D. unless( ) 4. Money is very important _ its not the most im
19、portant thing. A. or B. and C. so D. but( ) 5. Would you like to come for dinner tonight? Id like to, _ Im too busy. A. or B. but C. and D. So( ) 6. I didnt know he came back _ I met him in the street A. since B. when C. until D. afterCAADBC( ) 7. Mrs Shute wouldnt leave the TV set, her children wer
20、e waiting for their supper. A. even though B. because C. if D. as soon as( ) 8. Its cold outside. Please put on your coat _ you will catch a cold. A. but B. and C. Or D. so ( ) 9. In summer, food goes bad easily _ it is put in the refrigerator. A. until B. if C. unless D. because ( ) 10. What is our head teacher like, do you know? Oh, he is very kind _ he looks very serious. A. because B. though C. if D. when( ) 11. I didnt go to
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