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牛津初中英语

Carry on till tomorrow

 
 
 

日志

 
 
关于我

每个人都是一座山,世上最难攀越的山其实是自己。 往上走,即便一小步,也有新高度。

网易考拉推荐

8A期末专题复习归纳之五——连词  

2011-01-10 14:13:29|  分类: 8A U4--U6 |  标签: |举报 |字号 订阅

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考点一:

if 用法。if表示“如果”引导条件状语从句,后面不用一般将来时,只用一般现在时。主句用一般将来

时。所谓的“主将从现”。

If we do nothing, soon there will be no giant pandas in the world!

If I have time next weekend, I will go to the zoo.

Giant pandas will survive if we protect them.

但,if表示“是否”引导宾语从句,后面无此限制,该用一般将来时就用一般将来时。

I didn’t know if anyone was around me. (P94)

I don’t know if he will come here tomorrow. If he comes here, I will tell you.

 

考点二:

till用法。表示“直到……”。在初中阶段,till基本等同于until。

If elephants are thirsty, they will walk till they find a river. (P66)

 

考点三:

until用法。until前如果为肯定句,则表示“直到……”,表示前面这个动作一直做到until后面这个时间

为止。

You can shop until 10 p.m. at the shop. 你可以在这家商店购物直到晚上10点钟。

until前如果为否定句,则not…until表示“直到……才”,表示直到until后面这个动作发生,前面那个动

作才开始做。

You can’t shop until 10 a.m. at the shop.你直到早上10点才能在这家商店购物。

Tigers live as a family until baby tigers are 2-3 years old.

Not until half an hour later.

 

考点四:

because用法和because of用法辨析。because后跟从句,because of后跟名词词组。

Many wild animals cannot find enough food because of the heavy snow.

Some wild animals may die soon because they are losing homes.

 

考点五:

while然而。强调两者对比。

Many birds live comfortably in Zhalong Nature Reserve all year round, while some only stay there

for a short time.

My father is 50 years old while my mother is 49 years old.

 

考点六:

while当……时候,后面要跟长动作,不跟短动作。when 后面既可跟长动作,也可跟短动作。

People were running wildly while pieces of glass and bricks were falling down.

 

考点七:

as由于,因为。

As it was a holiday, no one was at school.

 

考点八:

since既然,I told myself to calm down since I was still alive.

 

考点九:

I’d like to, but….为固定结构。

I’d like to go, but I have to ask my parents first. (P87)

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