宾语从句与状语从句教程.ppt
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宾语从句与状语从句;状语从句复习;一、对时间状语从句的考查 ;when,while的区别:
①二者均可表示“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,二者可通用。如:
I met Kang Li when/while I was walking along the street.当我沿街散步时碰见了康丽。 ;② when可与终止性动词连用, while只能与延续性动词连用。如:
It was snowing when we got to the airport.当我们到达机场时,天正下着雪。(不能用 while)
③ while强调主句表示的动作持续于while所指的整个时间内;when可指主、从句所述动作同时或先后发生。如: ;Please write while I read.我读的时候,请写下来。
When he reached home,he had a little rest.回到家后,他休息了一会儿。 ;3)until=till在肯定句中表示“直到……为止”,主句要用延续性动词;在否定句中,表示“直到……才”,主句常用终止性动词,这时till和until可用before替换。如:
I waited till/until he arrived.我一直等到他到来。 ; We wont start until/till/before Bob comes.鲍勃到来之前,我们不会动身。
4)since从句中常用过去时,主句用一般现在时或现在完成时;as soon as如果主句是一般将来时,情态动词加动词原形或祈使句时,时间状语从句用一般现在时。如: ;Where have you been since I saw you last?
上次我和你见面之后,你到哪里去了?
I’ll phone you as soon as I arrive in Tonghua.
我一到通化就给你打电话。;2.考例:
1)我一到美国就给你打电话。(北京市海淀区)
Ill ring you up __ soon __ I get to America.
2)昨天直到雨停了,孩子们才离开学校。(同上)
The children ______ leave school ___ the rain stopped yesterday. ;3)It ______ ten years since they ______ to France.(河北)
A.as;covered
B.was;have moved
C.is;have moved
D.is;moved ;4)He ______ wait until the rain ______ .(南京市)
A.wont;will stop
B.wont;stop
C.will;stops
D.will;will stop ;5) When all the work _____(finish), you may go back home.
6) My brother____ (begin) to learn English when he was eight.
7) Please _____(not leave) here until you _____(tell) to
8) As soon as he_____ (get) there, he will write to us at once.;9) He took out the camera as soon as he _____(see) the monster.
10) I often ____(go) to see her when she was ill.
11) Please don’t talk so loud while others _____(work).
12) Where ____ you ____(study) before you went to college?;二、对条件状语从句的考查
1.要点:引导条件状语从句的连词有if(如果),unless在意义上相当于if...not。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 unless you study hard.(=You will fail if you don‘t study hard.)
除非你努力学习,否则你会失败。
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