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做连词可用于： 1.引导时间状语从句 “在．．．的时候，当．．．”
2. 引导原因状语从句 “因为，由于” 3. 引导方式状语从句 “依照，按照，如，像”
4. 引导让步状语从句 “尽管，虽说” 此种用法时从句要倒装（表语倒装，谓语倒装，状语倒装）
5. as后跟名词 （相当于一个时间状语从句）
As a young man, he worked hard. = When he was a young man, he worked hard.
6. 和某些动词连用，构成固定搭配．
treat．．．as regard．．．as look on(upon)．．．as take．．．as
take up．．．as think of．．．as introduce．．．as take a job as．．．
serve．．．as act as
7. 用于某些成语
as black as coal as dry as dust as blind as a bat as easy as ABC
as brave as a lion as fair as a rose as fat as a pig as busy as a bee
as free as the air as cold as ice as gentle as a lamb as deep as a well
as greedy as wolf as happy as a king as heavy as lead as sound as a bell
as poor as a church mouse as white as snow as proud as a peacock as quiet as a lamb
as red as blood as a matter of fact 事实上 as a result 结果
as a result of 由于．．．
as a rule 一般（说来）；通常 as ．．．as possible = as．．．as one can 尽力，尽可能
as follows 如下 as if (as though) 就像．．．似的 as to + 名词 至于，说到
as to + that从句 关于（常不译出） as usual 像平常一样 so as to 以便
so ．．．as to 如此．．．以至．．． as well as 也， 还 so (as) long as 只要
such ．．．as to 如此．．．以至．．． as．．．as．．． 和．．．一样．．．
as soon as 一．．．就．．． as soon as possible 尽快地 as well 也，还
II. 句型复习： 介词for的用法
一、 作介词用。
1、用来表示时间长度，有时不译出来，而且通常可以省略，但在句首或正式文体中则通常不省。如：
We have studied Einglish (for)five years. They have waited for you for ten days.
2、含有代动性，可与一个名词连用(不能和动名词连用)，构成介词短语，起不定式短语作用，表示目的。如： The students went to
Crusoe rdturned home for (=to get)two guns. Not all the ants go out for (=to look for)food.
3、含有“交换”之意。可用来表示“钱物等相交换”， “买卖关系”等。如：
He once refused to speak on the radio for$
4、常与表示离开、起行的动词连用(如sail,leave,staft,head等)。如：
I'll leave
5、表示“对……而言”。 It is dangerous for a small child to cross the road alone.It is very cold for October.
6、表示“由于”，“因为”。如：He got a medal for swimming well.He was scolded for being late.
7、表示“支持”，“赞成”。如；Some people were for the strike. He is for me .
8、表示“给”，“适于”。如：These flowers are for you . The books are for children.
9、固定搭配。
Be late for ,be fit for ,the rules for verbs,prize for physics, reach(out)for,bd/get ready for ,wait for, look for ,long for ,search for ,call for ,send for ,for ever, for ,example ,take for ,etc.
二、 作连词用，为“因为”。如： We must get rid of carelessness, for it often leads to errors(错误)。
III.词汇：A. 常用动词用法 (35)
bring 与take相反 bring sb. sth. = bring sth. to sb. 拿来，带来，送来
bring about vt. 引起，突现，造成 bring in 引进、引来、吸收
bring back 归还，带回来 bring back to life (health) 使复生，使恢复健康
bring out 显示出来，表现出来，讲清楚；出版；生产；提出
bring on 使．．．前进
bring up 提出；抚育大，教养 bring down 1. 降低 2. 使．．．倒下
B. 记住下列词汇：
temperature(温度) thirsty(口渴) thorough(彻底的)
tiresome(令人讨厌的) track(轨道) universe(宇宙) broadcast(广播)
volleyball(排球) Saturday (星期六) Thursday(星期四)
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