in school? ⑤本该．．．而
※while 的其他含义：
While I was walking down the street, I came across an old friend. ( while =_w__h_e_n__)
He likes pop music, while I am fond of folk
状语从句 讲练
状语是 一些从属连词。
? 例： ? When you cross the road, you must be careful.
当你过马路时要小心。（ when是从属连词）
? I was late because I missed the bus.
③it won't be + 一段时间 before...... 不久就....
We sailed four days and nights before we saw the land.
We hadn't run a mile before he felt tired.
④肯定句 “ 才” 否定句
“就”
※ as : 当…时；一边…一边；随着……
＊某事一发生，另一事立即发生 As the captain passed me, I asked him whether there was any hope of saving the ship. ＊两个动作同时发生
As the day went on, the weather got worse.
我迟到了，因为我误了公共汽车。 （ because是从属连词） .
? If she asks me, I'll tell her .
她如果问我，我就告诉她。（ if是从属连词）
? You look as if you need a rest. ? 你像是需要休息似的。（ as if是从属连词） .
状语从句的位置比较灵活，有时可以放于 句 首，有时可以置于句末。状语从句位于句首 时，其后常用逗号与后面的句子隔开。
I'll call you as soon as I come back. 我一回来就给你打电话。
Before they came back, we had finished the work.
他们回来前，我们已经完成工作了。 We haven't seen each other since he left.
状语从句可以根据其用途分为：
时间状语从句、地点状语从句、原因状语从 句、结果状语从句、目的状语从句、条件状 语从句、让步状语从句、比较状语从句、方 式状语从句。
1. 时间状语从句
?引导时间状语从句的关联词常有：after,
before, when, while, whenever, as soon as, the moment, as, since, until, the minute,
3. First time I met the girl. I felt in love with her. 4. You are welcome to come back any time you want
★When 的其他含义：
Why do you walk when you have a car? ③在．．．的情况下 How can we explain it to you when you
won't listen? ④if Why are you here when you should be
music. ( while =_b_u_t____)
While I really don't like art, I find his work impressive. (while=__al_t_h_o_u_g_h___)
While there is life there is hope. (while=__a_s__lo_n_g__a_s_____)
★ as的常见用法：
1.She sang as she worked.
①一边……一边……
2. Smart as he is ,he doesn't study hard.
②虽然（倒装）
3. You must try to do as I did.
③像…..一样
4. As she was late for class, she had to
say sorry. ④由于
※ before ① 在……前
It will be half a year before I come back.
②it will be + 一段时间 before...... 多久之后才...
It won't be half a year before we meet again.
★the minute, the second等名词短语可以 引导时间状语从句：
1. Every time I was in trouble, he would come to help me.
2. Next time you come, do remember bring your son here.
?the second, immediately, directly, instantly
等。例：
? The ball goes up very high after it hits the
ground. 这球着地后蹦得很高。
? Wait until you're called. 你等着叫你吧！
When he came, I was cooking. 他来时，我在做饭。
从他离开后我们没见过面。
※ when : 持续性／非持续性动词都可以 ①当…时
Are you going to be a sailor when you leave school?
②正在…忽然 when =at this time/at that time
sb. was doing … when… sb was about to do /was going to do…when… sb has just done …when