状语从句PPT课件(精讲)

连接词类别
作用 as 表示“当„„的时候”，往往和 when/ while 通用，但它着重强调主句与从句的动作或事情同 时或几乎同时发生。
例句 1.She came up as I was cooking.（同时） 2.The runners started as the gun went off.（几 乎同时） 1.When we were at school, we went to the library every day.（在一段时间内） 2.Sorry，I was out when you called me．（ call为短暂性动词）对不起，你打电话时我 刚好外出了。 3. When I got to the airport，the guests had left．（got to后发生）当我赶到飞机场时， 客人们已经离开了。 1.When ／While ／As we were dancing，a stranger came in．（dance为延续性动词） 。 2.Please don’t talk so loud while others are working.
8、比较状语从句 常用引导词:as(同级比较), than(不同程度的比较) 特殊引导词:the more … the more … ; just as …, so…; A is to B what /as X is to Y; no … more than; not A so much as B 例句 She is as bad-tempered as her mother. The house is three times as big as ours. The more you exercise, the healthier you will be. Food is to men what oil is to machine. 食物之于人,犹如油之于机器。
3、原因状语从句
常用引导词:because, since, as, for 特殊引导词:seeing that, now that, in that, considering that, given that, considering that, as much as, so much as 例句 My friends dislike me because I'm handsome and successful. Now that everybody has come, let's begin our conference. The higher income tax is harmful in that it may discourage people from trying to earn more. Considering that he is no more than 12 years old, his height of 1.80 m is quite remarkable.
吴年丽条件状语条件状语原因状语原因状语目的状语目的状语地点状语地点状语比较状语比较状语结果状语结果状语时间状语时间状语让步状语让步状语方式状语方式状语1时间状语从句常用引导词
状语从句
制作者：倪鹏 吴伟坚 演讲者：吴年丽 组员：秦翌翔 魏琴 刘雪莹
条件状语
结果状语
地点状语
目的状语
比较状语
方式状语 让步状语 时间状语
6、条件状语从句 常用引导词:if, unless, 特殊引导词:as/so long as, only if, providing/provided that, suppose that, in case that, on condition that 例句 We'll start our project if the president agrees. You will certainly succeed so long as you keep on trying. Provided that there is no opposition, we shall hold the meeting here.
4、目的状语从句
常用引导词:so that, in order that 特殊引导词:lest, in case, for fear that,in the hope that, for the purpose that, to the end that 例句 The boss asked the secretary to hurry up with the letters so that he could sign them. The teacher raised his voice on purpose that the students in the back could hear more clearly.
例句 I didn't realize how special my mother was until I became an adult. While John was watching TV, his wife was cooking. The children ran away from the orchard(果园) the moment they saw the guard. No sooner had I arrived home than it began to rain. Every time I listen to your advice, I get into trouble.
as
when
既可以表示在某一点的时候，又可表示在某一段 时间内。 when可以和延续性动词连用，也可以和短暂性动 词连用；而while和as只能和延续性动词连用 ; when从句的谓语动词可以在主句谓语动作之前、 之后或同时发生；while和as从句的谓语动作必须 是和主句谓语动作同时发生。 while 意思是“当„„的时候”或“在某一段时间 里”。 从句动作和主句动作同时发生，且从句动作为延 续性动词时，when，while，as都可使用。 主句中的动作或事情是在从句中的动作或事情的 进展过程中发生，从句中的动词一般要用延续性 动词。
原因状语
1、时间状语从句
常用引导词:when, as, while, as soon as, while, before, after, since , till, until 特殊引导词:the minute, the moment, the second, every time, the day,the instant, immediately , directly, no sooner … than, hardly …when, scarcely … when
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引导时间状语从句的连接词除上述外还有： ① till, not … until …, until, before, since Don’t get off the bus until it has stopped. He waited for his father until (till) it was twelve o’clock. It will be five years before he returns from England. ② hardly / scarcely … when, no sooner … than, as soon as once表示“一……就” As soon as I have finished it , I’ll give you a call. Once you show any fear, he will attack you. We had hardly got / Hardly had we got into the country when it began to rain. No sooner had he arrived / He had no sooner arrived than she started complaining. ③ directly, immediately, the moment, the minute that… 一……就 He made for the door directly he heard the knock. ④ each time, every time, by the time Each time he came to my city, he would call on so… that, such … that, 特殊引导词:such that, to the degree that, to the extent that, to such a degree that, 例句 He got up so early that he caught the first bus. It's such a good chance that we must not miss it. To such an degree was he excited that he couldn't sleep last night.
2、地点状语从句 常用引导词:where 特殊引导词:wherever, anywhere, everywhere 例句 Generally, air will be heavily polluted where there are factories. Wherever you go, you should work hard.
7、让步状语从句 常用引导词:though, although, even if, even though 特殊引导词: as(用在让步状语从句中必须要倒 装),while ( 一般用在句首 ),no matter …, in spite of the fact that, while, whatever, whoever, wherever, whenever, however, whichever 例句 Much as I respect him, I can't agree to his proposal. 尽管我很尊敬他, 我却不同意他的建议。 The old man always enjoys swimming even though the weather is rough. No matter how hard he tried, she could not change her mind. He won't listen whatever you may say.
9、方式状语从句 常用引导词:as, as if, how 特殊引导词:the way When in Rome, do as the Roman do. 例句 She behaved as if she were the boss. Sometimes we teach our children the way our parents have taught us.
• 答案：D • 解析：句意为—— 星期五那天，当我们正准备出发去过周末的时 候，我的女儿听到有人叫救。易混淆：在while和when这里犹豫。
对比： (2006湖南) 2. I had just stepped out of the bathroom and was busily drying myself with a towel ____ I heard the steps. A. while B. when C. since D. after 答案： B 解析：下划线处表示 “正在这时， 突然……”， 四个选项中只有when可以表示 此含义。
while
延续性动词表达的动作能够延续，如：keep保存，维持；walk走路；read 阅读等；非延续性动词也称瞬间动词，所表达的动作不能够延续。如：hear 听到；return 归还；see看见。
Back to school
1.（11浙江4） One Friday, we were packing to leave for a weekend away ___ my daughter heard cries for help. A. after B. while C. since D. when