Unit4知识点

选修1

Important Points in unit4

Ⅰ. 主题相关

1） there can be all kinds of disasters

earthquake flood drought typhoon tornado mud-rock flow landslide plague tsunami lightning a plague of insects global warming snowslide sand storm

2) how to express “many” in other ways

many a great many many a a (large/good/great)number of a lot of lots of plenty of thousands of tens of thousands of hundreds of thousands of millions of hundreds of dozens of scores of

Explanation of difficult sentences

1. It seemed that the world was at an end. 似乎世界末日来临。

seem连系动词，似乎，好像

1）seem + (to be ) + adj./n.

2）seem + to do

3）seem + like + n.

4）It seems/seemed (to sb.) + that-clause如：Our English teacher seems to be a kind man. He seems to know everything = It seems that he knows everything. It seems like years since we last met. It seems that I have seen her before. = I seem to have seen her before.

2. Everywhere they looked nearly everything was destroyed.人们无论朝哪里看，几乎一切都被毁了。

everywhere 用作连词，等于wherever, no matter where，引起让步状语从句。如：Everywhere I go, I find the same thing.无论我去哪儿，我都看到一样的东西。You see it everywhere you look.无论你往哪儿看，你都会看到它。

3. …90% of its homes were gone. 90%的家都不存在了。

是过去分词作表语，意为“不在”“走了”“丢了”“用完了”，或指人“死了”。分数、百分数作主语，谓语动词要根据分数、百分数代表的量是可数名词还是不可数名词而定。如：His job was gone.他的工作丢了。My watch was gone.我的表不见了。He’ll be gone for quite a little while.他要离开很长一段时间。50% of the students in our class are girls.我们班50%的学生是女生。Two-thirds of the earth surface is covered with water.地球表面的三分之二是水。

4. The army organized teams to dig out those who were trapped and to bury the