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1、Unit 4 M3Language pointsFurther questions:1.What is fundamental to the development of life?What chain reaction does it produce?2.There used to be nine planets in the solar system.Recently scientist have decided that one of them can no longer be considered a planet.Do you know the name of it?Why did
2、they remove it?Fill in the diagram:Water life(plants)oxygen shellfish/fishamphibiansreptiles -Huge animals (dinosaurs)mammals humans in water on land2.There used to be nine planets in the solar system.Recently scientists have decided that one of them can no longer be considered a planet.Do you know
3、the name of that planet?Do you know why they removed it?Pluto.Scientists now think it is too small to be called a planet.1.However,according to a widely accepted theory,the universe began with a“Big Bang”that threw matter in all directions.adv.+done adj.一对新婚夫妇一对新婚夫妇一个高度发达的国家一个高度发达的国家 a newly married
4、 couple a highly developed country 2)他以一首歌开始他以一首歌开始/结束他的演讲。结束他的演讲。He began/ended his speech with a song 首先，请大家拿出纸和笔。首先，请大家拿出纸和笔。To begin with,please take out paper and pen.3)他们朝学校的方向走去。他们朝学校的方向走去。They walked in the direction of our school.4)matter n.物质物质（总称（总称)不可数不可数 the amount of matter in the univ
5、erse important matters 重要的事情重要的事情2.What it was to become was uncertain until 4.5 and 3.8 billion years ago when the dust settled into a solid globe.1)was to =would 2)settle:降落；停留在降落；停留在3)Dust settled on the tables and chairs.4)settle the problem 解决问题解决问题 5)settle in London 定居定居6)settle down =calm do
6、wn 冷静下来冷静下来主语从句主语从句定从定从3.What is even more important is that as the earth cooled down,water began to appear on its surface.1)_ _ _ _important _ as the earth cooled down,water began to appear on its surface.2)2)_ _,as the earth cooled down,water began to appear on its surface.It is even more thatMore
7、 importantly4.It was not immediately obvious that water was to be fundamental to the development of life.it is obvious that 5.What many scientists believe is that the continued presence of water(水的水的长期存在）长期存在）allowed the earth to dissolve harmful gases and acids into the oceans and seas.(=_ _ _ _the
8、 continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas.)Many scientists believe thatIt is believed that 6.This produced a chain reaction,which made it possible for life to develop.1)他发现不可能离开这个国家了他发现不可能离开这个国家了.He found/felt/thought it impossible to
9、 leave the country.2)我认为早起是一个好习惯我认为早起是一个好习惯.I think/consider/find/it a good habit to get up early.7.They multiplied and filled the oceans and seas with oxygen,which encouraged the later development of shellfish and all sorts of fish.1)multiply vi.(1)breed 繁殖繁殖 (2)increase 增加增加(数量数量)2)fill A with B =
10、A be filled with B 8.adj./n.仍然是仍然是 remain doing 仍然在做仍然在做 done 是是(某种状态某种状态)to be done 尚待去做尚待去做 It remains to be seen whether the remaining+n.=the n.+left (adj.)剩下的剩下的 e.g the remaining students remains n.剩余物剩余物;遗址遗址 1)他们的婚姻还是个秘密他们的婚姻还是个秘密.Their marriage remained a secret.2)Tom,a 40-year-old man,_.3)T
11、he students _ to music.4)它对我们是否有害或是有益还得等着瞧它对我们是否有害或是有益还得等着瞧.It remains to be seen whether it does us harm or good.Whether it does us harm or good remains to be seen.仍然单身仍然单身还在听还在听 remains singleremained listening9.Some clever animals appeared and spread all over the earth.spread spread spread 散布散布 v
12、i.1)spread the map out on the floor 2)The news spread through the school very quickly.3)The fire spread quickly through the forest.The disease spreads easily.4)The disease was spread by mice.摊开摊开;铺开铺开(消息消息)传播传播;流传流传(火火/疾病疾病)蔓延蔓延 10.Whether life will continue on the earth for millions of years to com
13、e will depend on whether this problem can be solved.在未来的数百万年里，生命能否在地球上在未来的数百万年里，生命能否在地球上延续取决于这个问题能否得到解决延续取决于这个问题能否得到解决主语从句主语从句宾语从句宾语从句(1)for millions of years to come(2)to come（用于名词后）未来的，将来（用于名词后）未来的，将来1)They may regret the decision in years to come.(在以后的几年里在以后的几年里)2)This will be a problem for some time to come.(在未来的一段时间内在未来的一段时间内)(2)depend on ones parents You can depend on it that he will join our club.It/That(all)depends.那得看情况那得看情况 I dont know if we can help.It all depends.Homework 1.背单词背单词 unlike puzzle2.练习卷练习卷 3