江苏南京市英语原因状语从句.pdf

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1、原因状语从句原因状语从句 A-Giving reasons with“because”.1、because 是从属连词，表示直接原因，常译为“因为”，其语气最强。常用来回答 why 的提问。如：*I stayed at home because it rained.因为下雨我呆在家里。*Why is she absent?Because she is sick.她为什么缺席？因为她病了。*Because he was ill,he was absent yesterday.2、because+句子；句子；because of+短语。如：短语。如：1.)-Why are you late?-_B

2、ecause_ there is too much traffic.2.)Tan Dun has succeeded in Music _because of_ his efforts.3、because 和和 so 不能同时使用，不能同时使用，because 通常放在表示原因的句子前，通常放在表示原因的句子前，so 通常放在表示结果的句子前。如：通常放在表示结果的句子前。如：I want to share the best art with people,so I am always searching for something better or different.=Because I

3、 want to share the best art with people,I am always searching for something better or different.B-Giving reasons with“since and as”.1.since 是从属连词，表示显然的或已为人所知的理由，常译为“因为”、“既然”，语气比 because 稍弱，但是比 as 强。通常置于句首。如：*Since he asks you,you just tell him why.他既然问你，那就告诉他为什么吧。*Since everyone is here,lets start.既

4、然大家都到齐了，我们就出发吧！*Since she has no time,she cant go with you.*Since we have no money,we cant buy that vase.既然我们没钱，我们就不能买那花瓶。2.as 是从属连词，表示的“原因”是双方已知的事实或显而易见的原因，或者理由不是很重要，含义与 since 相同，但语气更弱，常译为“由于，鉴于”。它引导的从句通常放在句首，有时也可放在句末。它引导的从句通常放在句首，有时也可放在句末。如：*As I had a cold,I was absent from school.因为我感冒了，所以没去上课。*

5、As it was getting late,I decided to stay here.因为天色已晚，我决定呆在这儿。*As you are busy,I wont waste your time.*As it is raining,youd better take a taxi.天下雨了，你最好乘出租车。原因状语从句小结：原因状语从句小结：1、该类从句的引导词有 because,since 和 as 等。2、强调未知原因回答 why 提问常使用 because，通常放在主句后，也可放在主句前面。3、表示已知的、显然的理由，常使用 since 和 as，通常放在主句前。4、because

6、和 so 不能同时使用。5、for 也有也有“因为因为”之意，是并列连词，语气较强。用来附带解释说明前一分句的原因理由或用来表示推断的依据，之意，是并列连词，语气较强。用来附带解释说明前一分句的原因理由或用来表示推断的依据，前面常带逗号。前面常带逗号。for 引导的并列句，一般放在所要说明的句子的后面。引导的并列句，一般放在所要说明的句子的后面。如：I went to see him,for I had something to tell him.我去见他，因为我有事要告诉他。It must have rained last night,for the ground is wet 学科网（北京

7、）股份有限公司 原因状语从句原因状语从句 巩固练习：巩固练习：1I love going to school _ everyone in my class is friendly.Abefore Balthough Cbecause Dunless 2Many wild animals dont have a safe place to live,_ villages and farms are growing bigger and taking away their land.Abecause Buntil Calthough Dbefore 3We are making a big cak

8、e _ its Dads birthday today.Abecause Buntil Conce 4I want to buy something special for my grandmother,_ her birthday is coming.Abecause Balthough Cso 5Mum,may I have more chocolate?Youd better not _ too much sweet food is bad for health.Auntil Bwhile Calthough Dbecause 6Lucy is busy making a fruit c

9、ake _ its her mothers birthday today.Aor Bbut Calthough Dbecause 7_ weve made the promise,lets keep to it and not give up easily.AWhether BSince CThough DUnless 8Life is like a one-way race,so treasure every moment _ time cannot be won again.Aso Bas Cif Dunless 9Nowadays,Chinese food is getting more

10、 and more popular _ it is not only colorful but also tasty.Aunless Bbecause Calthough Duntil 10Did you hear the news about the opening of Ganzhou-Shenzhen high-speed railway on December 10th?Yes.I was excited about it _ my parents can come back home in 1.5 hours.Auntil Bbut Calthough Dbecause 11Zha

11、Xi didnt go to school _ he was ill.Abecause Bbecause of Cif Dso 12We didnt enjoy the trip at all _ the weather was awful.Aalthough Bbecause Cunless 13We didnt enjoy the day _ it rained heavily.Abecause Bthough Cif 14_ we have come to the old town,why not taste the local food?AIf BUnless CSince 15I d

12、ont have to introduce her to you _ you know the girl.Auntil Bunless Csince Dbut 16_ your father is well again,you no longer have anything to worry about.ASince BBefore CAlthough DWhile 17Many Chinese people are falling in love with camping _ long-distance travel is becoming more difficult.Auntil Bal

13、though Cunless Dsince 学科网（北京）股份有限公司 原因状语从句原因状语从句 18_ you have finished most of your homework at school,you neednt stay up late to do it.ABefore BUntil CSince DWhen 19_ everything was going according to the plan,there was no need to worry.ASince BAlthough CUnless DBefore 20 _ there are different cust

14、oms in different countries,its necessary to learn them before going abroad to avoid trouble.AAs BUnless CAlthough 21_ China is growing stronger and stronger,Chinese is taught in more and more countries.AIf BUnless CAs DAlthough 22She may need some help _ shes new here.Lets help her as much as possible.Athough Bunless Cwhile Das 23People in the world should work together _ they are leaves of the same tree.Abut Bas Cor 24As far as I know,Jane isnt used to working here.Why not help her_shes new?Athough Buntil Cas Dif 学科网（北京）股份有限公司