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1、相当于副词，在句中做状语的从句。由从属连词引导；从句位于主句前时常用逗号隔开,连词：when, whenever, as, while, till, until, since, after, before; once, by the time, each time, every time, next time, the first time; as soon as, the moment/minute/instant, instantly, directly, immediately, no sooner.than, hardly.when(一就),As time went on, his s
2、orrow passed. (= With time going on, .) (表随着，只用as),When I arrived, I saw a 2-to-3-week-old owl(猫头鹰). (非延续，不用while),例句 He fell asleep while (he was) doing his homework. (while从句的谓语动词须延续性),连词：where (的地方), wherever (任何地方),例句：We must camp where we can get water. /You can sit wherever you like.,连词：becaus
3、e(因为)；since, now that, when(既然)；as, seeing that, in that(由于)；for the reason that(出于这个原因), given that /considering that(考虑到),He chose the movie because it seemed appropriate.,Theres no need to turn on me just because rain spoiled the picnic.,Given that conflict cannot be avoided, we need to learn how
4、 to manage it.,连词：if, unless (除非，如果不), provided /providing that (假如, 倘若), on condition that (条件是, 如果), as long as, so long as, only if (只要),So long as you make Ruth happy, Im content. 只要你能让露丝开心，我就满足了。,Unless you wear boots, you may get bitten by snakes. 如果你不穿靴子,I will subscribe ten dollars provided
5、that you do, too. 我捐10元，条件是你也捐。,连词：so that（以便）, in order that, in case (以防), for fear that (生怕，以免),Then lay the tube in place so that one end rests all the way in the cup.,Keep an eye on the stove in case the coffee boils. (以防咖啡煮沸溢出),连词：so that(结果), so +adj. or adv. that., such+ (adj.+) n. that. (如此
6、以至),The window was covered so that it was not possible to see inside.,I was so nervous that I could hardly tell which direction was left.,结果,连词：so that(结果), so +adj. or adv. that., such+ (adj.+) n. that. (如此以至于),There were so many cars that I lost count. 汽车太多，我数不清了。,He has made such rapid progress t
7、hat we can hardly believe it.,Tom is such a good egg that everybody wants to be his friend.,连词：although, though, while, as, even if, even though, whether.or, whatever, whoever, whenever, wherever, whichever, no matter what /who /when /where /which,Although it doesnt taste of anything special, its st
8、ill worth a try.,While all of them are useful, they can get a little complex.,连词：although, though, while, as, even if, even though, whether.or, whatever, whoever, whenever, wherever, whichever, no matter what /who /when /where /which,We should respect others no matter who they are.,She felt sure thi
9、s friendship would last, whatever else happened.,连词：(just) as, as if, as though,Just as laughing has many health advantages, so does crying.,I stared at everything as if I was looking at it for the first time.,比较,连词：than, as.as, not as/so.as, as. as usual/possible(=one can)/ necessary/ expected,Some
10、times the host offers guests more food than they need.,The results were not as bad as I had expected. 结果没有我预料的那么糟。,They have produced twice as much sugar as in the previous season.,Please make the situations as concrete as possible /you can.,考点考法,填空,_ China grows stronger and stronger, more and more
11、 people learn Chinese.,Being a mother isnt as bad _ I thought at first!,_ we listen, we cannot know how to respond.,As,as,Unless,1. 吃饭时别谈话。 Dont talk while you are eating. (整个期间) 2. 雨停了我们就去踢足球。 When it stops raining, well go and play football. (有先后),3. 随着年纪越来越大, 他变得越来越有智慧了。 As he grows older, he is
12、getting wiser and wiser. (同时变化) 4. 我们必须坚持下去,直到成功。 We must carry on till we succeed. 5. 他们结婚到现在已经十年了。(since) Its been /It is ten years since they married.,6. 不久以后我们就要毕业了。(before) It wont be long before we graduate. 7. 过了很久我们才了解真相。(before) It was a long time before we came at the truth. 8. 我刚一进家门，电话铃就
13、响了。(多译) No sooner had I got into the house than the phone rang. Hardly had I got into the house when the phone rang.,9. 有志者，事竟成。 Where there is a will, there is a way. 10. 在你有疑问的地方做个记号。 Make a mark where you have any doubts.,11. 既然你问了，我就告诉你我的真实想法。 Now that /Since youve asked, Ill tell you what I rea
14、lly think. 12. 她生病了，可能她需要些帮助。 As shes been ill perhaps shell need some help.,13. 许多考生失分只是因为他们没有正确读题。 Many exam candidates lose marks simply because they do not read the questions properly. (必然的因果关系, 且有simply /only修饰，只能用because),14. 为了让他克服学习中的困难，他的几个同学主动帮他。,In order that he can overcome the difficult
15、ies in his studies, a few classmates of his offer to help him.,15. 最好多带点衣服，以防天变冷。 Youd better take more clothes in case the weather turns cold. 16. 我们轻声谈话, 生怕吵醒婴儿。 We spoke in whispers for fear that we might wake the baby.,17. 学好一种语言非下苦功不可。 One can not learn a language well unless one works hard. 18
16、. 只要你能远离他们你就安全了。 As long as you can keep away from them youre safe.,19. 他同意借车给我们，条件是周末前要还。 He agrees to lend us the car on condition that(= only if)/ provided that/ providing that we return it before the weekend. 20. 假定她不来，我们该怎么办？ Supposing (that) she doesnt come, what shall we do?,21. 他是一位如此优秀的老师，我们都尊敬他。 He is such a good teacher that we all respect him. / He is so good a teacher that we all respect him.,22. 他在作业中出了这么多错，老师决定给他补课。 He made so many mistakes i
