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1、状语从句,状语从句主要用来修饰主句或主句的谓语。一般可分为八大类, 分别表示时间、地点、原因、目的、结果、条件、让步、比较。尽管种类较多, 但由于状语从句与汉语结构和用法相似, 所以理解和掌握它并不难。状语从句的关键是要掌握引导不同状语从句的常用连接词和特殊的连接词即考点。,状语从句简介,总结、状语从句常见引导词,常用引导词：_, _, _, _ _. _, _, _, _, _, _, _. 特殊引导词：,when as while as soon as while before after since till until,the minute, the moment, the day,
2、immediately, no sooner than, hardly when, scarcely when,1. 时间状语从句,1) when, while, as的区别： 三者均可表示“当的时候”, 如果主句表示的是短暂的动作, 而从句表示的是一段时间, 三者可通用。 as和when都可与终止性动词连用, while 只能与延续性动词连用。如： It was snowing _ we got to the airport当我们到达机场时, 天正下着雪。（不能用 while）,疑点解释, as强调主句与从句表示的动作同时发生; while强调主句表示的动作持续于while所指的整个时间内;
3、 when可指主、从句所述动作同时或先后发生。如: He sang as he went along. 他边走边唱. Please write_ I read. 我读的时候, 请写下来。 _ he reached home, he had a little rest. 回到家后, 他休 息了一会儿。,常用引导词: _, _ 特殊引导词:,if unless,as/so long as, Well start our project _ the president agrees. You will certainly succeed _ _ _ you keep on trying.,2. 条件
4、状语从句,要点: 引导条件状语从句的连词有if(如果)、unless(除非)等, unless在意义上相当于ifnot。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： 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。,常用引导词: _, _ 特殊引导词：,as(同级比较) than (不同程度的比较),the more the more ; A is to B what /as X is to Y; no more than;,3. 比较
5、状语从句, She is_ bad-tempered _ her mother. The house is three times_ big _ ours. _ more you exercise, _ healthier you will be.,常用引导词: _ _, _ _.,so that such that, He got up _ early that e caught the first bus. Its _ a good chance that we must not miss it.,4. 结果状语从句,He spoke _ fast that I couldnt follo
6、w him他讲得太快，我跟不上。 He told us _funny stories that we all laughed 他给我们讲了那么多有趣的故事，我们全都哈哈大笑。,常用引导词: _ 特殊引导词: _ _ _,where,wherever, anywhere, everywhere, Air will be heavily polluted where there are factories. Wherever you go, you should work hard.,5. 地点状语从句,Where there is a will, there is a way. _. Where
7、ver you go, I go too 无论你去哪里, 我都去。,比较: because常回答why引导的疑问句, 该从句一般位于主句后; since比as正式, 两者不回答why引导的问句, 而且其从句一般放在句首。如：,常用引导词: _, _, _,because since as,6. 原因状语从句,Why cant I go? 为什么我不能去? _ youre too young. 因为你年纪太小了。 As (_)you are not feeling well，youd better stay at home 既然你不太舒服，还是留在家里的好。,常用引导词:_ _, _ _ _.,
8、so that in order that, The boss asked the secretary to hurry up with the letters _ _ he could sign them. The teacher raised his voice _ _ _ the students in the back could hear more clearly.,7. 目的状语从句,常用引导词: _, _, _ _, _ _ 特殊引导词：,though although even if even though,no matter ,8. 让步状语从句, _ its hard wo
9、rk, I enjoy it 尽管这工作很辛苦, 我还是很喜欢。 _ _ how hard the work was，he never gave it up 不管工作多么艰难, 他都从不放弃。,【考点1】区分when, if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“当时候”, 引导宾语从句意为“什么时候”; if引导条件状语从句意为“如果”, 引导宾语从句意为“是否”。如:,九. 对状语从句和宾语从句、简单句、并列句的混合考查,1. Mike wants to know if _ a picnic tomorrow Yes. But if it _, well visit
10、the museum instead A. you have; will rain B. you will have; will rain C. you will have; rains D. will you have; rains,C,2. Do you know when he _ back tomorrow？ Sorry, I dont. When he _ back, Ill tell you A. comes; comes B. comes; will come C. will come; comes D. will come; will come,C,1) It _ ten ye
11、ars since they _ to France. A. as; covered B. was; have moved C. is; have moved D. is; moved 2) He _ wait until the rain _ A. wont; will stop B. wont; stop C. will; stops D. will; will stop,选择题,D,C,3) He will go to the Great Wall if it _ tomorrow A. wont rain B. doesnt rain C. dont rain D. isnt rain
12、ing 4) _ you eat old food, you may be ill. A. Before B. Why C. If D. Which,B,C,5) Jack runs as _ as Tom A. fast B. faster C. fastest D. much 6) 30，000dollars is a large amount of money, but its _ than we need A. for more B. very much C. far less D. very little,C,A,7) Miss Gao asked a question, but i
13、t was _ that nobody could answer it A. very difficult B. too difficult C. difficult enough D. so difficult 8) I cant understand this passage _ there are no new words in it A. if B. because C. though D. and 9）“Why did Li Lei use a pencil? ” “ _ his pen was broken” A. Because B. When C. Until D. If,A,D,C,
