zh-CNiwms.net pic/logo.gif http://www.enun.cn Fri, 25 Apr 2008 09:55:45 GMT 比较：so和 such
　其规律由so与such的不同词性决定。such 是形容词，修饰名词或名词词组，so 是副词，只能修饰形容词或副词。 so 还可与表示数量的形容词many, few, much, little连用，形成固定搭配。
so foolish　　　　　　　such a fool　　　　　　　
　so nice a flower　　　　such a nice flower　 　　
　so many / few flowers　 such nice flowers　　　　
　so much /...]]> Sat, 10 Jun 2006 00:08:51 GMT I had hardly / scarcely got home when it began to rain.
　I had no sooner got home than it began to rain.
　As soon as I got home, it began to rain.
注意：如果hardly, scarcely 或no sooner置于句首，句子必须用倒装结构：
　Hardly / Scarcely had I got home when it began...]]> Sat, 10 Jun 2006 00:08:51 GMT 肯定句：
　 I slept until midnight. 我一直睡到半夜时醒了。
　 Wait till I call you.　 等着我叫你。
　 （在肯定句中可用before代替 Let's get in the wheat before the sun sets.）
否定句：
　 She didn't arrive until 6 o'clock.
　 她直到6点才到。
　 Do...]]> Sat, 10 Jun 2006 00:08:51 GMT 　　　 Just as / Just when / When I stopped my car, a man came up to me.
2）当从句的动作发生于主句动作之前，只能用when 引导这个从句，不可用as 或 while。
　　　 When you have finished your work, you may have a rest.
3）从句表示"随时间推移"连词能用as，不用when 或while。
　　　 As the day went on, the weather got worse.　
　　　日子一天天过去，天气越变越坏。
...]]> Sat, 10 Jun 2006 00:08:51 GMT 　注意： 当有though, although时，后面的从句不能有but，但是 though 和yet可连用
　Although it's raining, they are still working in the field.　
　虽然在下雨，但他们仍在地里干活。
　He is very old, but he still works very hard.　
　虽然他很老，但仍然努力地工作。
　Though the sore be healed, yet a scar may remain.
　伤口虽愈合，但伤疤留下了。 （谚语）
典型例题
1） ___she is young, she kn...]]> Sat, 10 Jun 2006 00:08:50 GMT 　　 You must speak louder so that /in order that you can be heard by all.
　　 He wrote the name down for fear that(lest) he should forget it.
　　 Better take more clothes in case the weather is cold.
...]]> Sat, 10 Jun 2006 00:08:50 GMT 1）　because语势最强，用来说明人所不知的原因，回答why提出的问题。当原因是显而易见的或已为人们所知，就用as或 since。
　 I didn't go, because I was afraid.
　 Since /As the weather is so bad, we have to delay our journey.
2）　由because引导的从句如果放在句末，且前面有逗 号，则可以用for来代替。但如果不是说明直接原因，而是多种情况加以推断，就只能用for。
　 He is absent today, because / for he is ill.
...]]> Sat, 10 Jun 2006 00:08:50 GMT 1） as, (just) as…so…引导的方式状语从句通常位于主句后，但在(just) as…so…结构中位于句首，这时as从句带有比喻的含义，意思是"正如…"，"就像"，多用于正式文体，例如：
　Always do to the others as you would be done by.
　你希望人家怎样待你，你就要怎样待人。
As water is to fish, so air is to man.
　我们离不开空气，犹如鱼儿离不开水。
Just as we sweep our rooms, so we...]]> Sat, 10 Jun 2006 00:08:50 GMT Where I live there are plenty of trees.
　　我住的地方树很多。
　　Wherever I am I will be thinking of you.
　 不管我在哪里我都会想到你。
...]]> Sat, 10 Jun 2006 00:08:00 GMT 　　if 引导的条件句有真实条件句和非真实条件句两种。非真实条件句已在虚拟语气中阐述。
unless = if not.　
　 Let's go out for a walk unless you are too tired.
　 If you are not too tied, let's go out for a walk.
典型例题
You will be late ___ you leave immediately.　
A. unless　 B. until　 C. if　　D. or
　答案A...]]>