1、Unit 41.What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.随后它会变成什么没人能知道，直随后它会变成什么没人能知道，直 到到38-45亿年前，这团尘埃才慢慢地亿年前，这团尘埃才慢慢地 形成一个固体的球状物。形成一个固体的球状物。【分析分析】a.此复合句的主句为此复合句的主句为What it was to become was uncertain；从句为；从句为_引导引导 的定语从句。的定语从句。b
2、.主句中包含一个由主句中包含一个由what引导的主语从引导的主语从 句句What it was to become。c.until是介词，与其前带否定前缀的形容是介词，与其前带否定前缀的形容 词词uncertain构成构成not.until句式，表示句式，表示 “到到才，在才，在之前之前”，引导，引导between 4.5 and 3.8 billion years ago作时间状语。作时间状语。when 这句话还可以这样表述：这句话还可以这样表述：Nobody knew what the cloud of dust would become before it turned into a s
3、olid globe between 4.5 and 3.8 billion years ago.2.The earth became so violent that it was not clear whether the shape would last or not.a.此复合句的主句为此复合句的主句为The earth became so violent；从句为；从句为_引导的结果引导的结果 状语从句。状语从句。b.so.that.如此如此以致以致，其中，其中 that可以省略。可以省略。thatc.结果状语从句中包含一个由结果状语从句中包含一个由whether引引 导的主语从句，导的
4、主语从句，_是形式主语。是形式主语。这句话还可以这样表述：这句话还可以这样表述：People didnt know whether the solid globe would keep the shape or not,because the earth didnt stop exploding.it 【仿写仿写】夜里冷得我一点也睡不着。夜里冷得我一点也睡不着。_At night it was so cold(that)I couldnt sleep at all.violence n.暴力；猛烈；强烈；狂热。暴力；猛烈；强烈；狂热。e.g.He strongly opposes violen
5、ce and war.他强烈反对暴力和战争。他强烈反对暴力和战争。The violence of her feelings surprised her mother.她感情之强烈使她妈妈很吃惊。她感情之强烈使她妈妈很吃惊。链接链接violent adj.暴力的；强暴的；强烈的；暴力的；强暴的；强烈的；鲜艳夺目的。鲜艳夺目的。e.g.Children should not be allowed to watch violent movies.不应该让小孩看暴力电影。不应该让小孩看暴力电影。There was a violent reaction from the public.公众的反应很强烈。
6、公众的反应很强烈。Her dress was a violent pink.她的连衣裙是非常鲜艳的粉红色。她的连衣裙是非常鲜艳的粉红色。violently adv.强烈地；激烈地；厉害地。强烈地；激烈地；厉害地。e.g.She shook her head violently.她拼命摇头。她拼命摇头。She was violently sick.她病得厉害。她病得厉害。in time:sooner or later;eventuallye.g.Ill see him in time.in time(for sth./to do sth.):not latee.g.She will be bac
7、k in time to prepare dinner.3.They were in time to produce carbon,.,which were to make the earths atmosphere.与与time相关的短语相关的短语:in no time 立刻立刻,马上马上 at times 有时有时 at a time 每次每次;依次依次 once upon a time 从前从前 on time 按时按时;准时准时 at one time 从前从前 for the time being 暂时暂时 from time to time 不时地不时地 atmosphere意为意
8、为“大气，气氛等大气，气氛等”。e.g.There was an atmosphere of violence and insecurity.他们之间以前有种相互信任的气氛。他们之间以前有种相互信任的气氛。4.What is even more important is that as the earth cooled down,water began to appear on its surface.【分析分析】a.本句的结构是：主语从句（本句的结构是：主语从句（What is even more important）+系动词（系动词（is）+表语从表语从句（句（that as the ea
9、rth.on its surface.）b.表语从句中含有一个由表语从句中含有一个由_引导的时间状引导的时间状 语从句。语从句。as这句话还可以这样表述：这句话还可以这样表述：Water began to appear on the earth because it cooled down,and this is more important.5.This produced a chain reaction,which made it possible for life to develop.【考点考点】it作形式宾语，真正宾语常为作形式宾语，真正宾语常为不定式或从句。不定式或从句。【考例考例
10、1】We feel _ our duty to make our country a better place.A.it B.this C.that D.one【考例考例2】Why dont you bring _ to his attention that youre too ill to work on?A.that B.it C.his D.him【点拨点拨】都选都选it。都考查。都考查it作形式宾语。作形式宾语。考例考例1中，中，it指代指代to make our country a better place；考例；考例2中，中，it指代指代 _。that youre too ill
11、to work on6.They produced young generally by laying eggs.lay-laid-laid-laying 放放,把把.放在放在.;产卵产卵e.g.He laid his books on the desk.注意注意:lay(laid;laid;laying)放置放置;产卵产卵 lie(lay;lain;lying)躺躺;位于位于 lie(lied;lied;lying)说谎说谎 The naughty boy _ to me that the hen that _ there just now had _ two eggs the day be
12、fore.A.laid;laid;laid B.laid;lay;lainC.lied;laid;lain D.lied;lay;laid7.,because they gave birth to young baby animals.【寓词于境寓词于境】仔细阅读下列句子，并试仔细阅读下列句子，并试着总结着总结give birth to的含义及用法。的含义及用法。1)Mrs.White gave birth to a fine healthy baby in her late thirties.2)Mary gave birth to a healthy baby girl.3)It was
13、this event that gave birth to the peace movement.统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版【归纳归纳】give birth to后可直接跟名词，意为后可直接跟名词，意为“_”（句（句1和句和句2），也可意为），也可意为“_”（句（句3）。）。【拓展拓展】at birth 出生时出生时 sin
14、ce/from birth 自出生后自出生后 date of birth 出生日期出生日期分娩分娩产生产生统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版【即学即练即学即练】根据汉语提示，用含根据汉语提示，用含birth的短语的适的短语的适当形式完成下列句子。当形式完成下列句子。1.Janes mother has just _ _(生了双胞胎生
15、了双胞胎).2.It was said that the baby _(出出生时重七磅生时重七磅).given birth toweighed seven pounds at birthtwins 统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版8.They are putting too much carbon dioxide into the
16、 atmosphere,which prevents heat from escaping from the earth into space.他们把太多的二氧化碳释放到大气层他们把太多的二氧化碳释放到大气层中中,这就使得热量不能从地球上散发到这就使得热量不能从地球上散发到太空中去。太空中去。统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版阅读下
17、列句子阅读下列句子,注意注意prevent.from的意的意思和用法。思和用法。1)There was nothing to prevent her from doing so.2)We must prevent the water from being polluted.3)The emperor ordered his porters to prevent the speaker entering the building.统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版统编版优秀公开课课
18、件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版归纳归纳 prevent.from的意思是的意思是 _。from后多跟动词后多跟动词-ing形式形式(句句1、句、句2)；有时可省略；有时可省略from(句句3)。拓展拓展 近义短语有近义短语有:stop.from 阻止阻止干某事干某事;keep.from阻止阻止干某事。干某事。注注意意:prevent和和stop后的后的from都可以省略都可以省略,而而keep.from中的中的from则不能省略，如则不能省略，如果省略了果省略了,其意义将发生改变。其意义将发生
19、改变。制止、阻制止、阻止、使止、使不做某事不做某事统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版1)No one can prevent the plans _ out.A.to be carried B.from carryingC.not to carry D.from being carried2)They tried to preven
20、t the plane from _ on the runway.A.land B.landingC.to land D.being landed统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版I.根据下列各句句意及所给单词的首字母根据下列各句句意及所给单词的首字母或汉语提示，写出该单词的正确形式。或汉语提示，写出该单词的正确形式。1.This
21、_(理论理论)helps to explain how animals communicate with each other.2.The final cost could be as much as one b_ dollars.3.31 people have been injured in _(暴力的暴力的)incidents throughout the day.theorybillionviolent统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版统编版优秀公开课课件下载PPT课件人
22、教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版4.Across the g_,sea level varies by hundreds of feet.5.A(n)_(原子原子)is so small that we can not see it.6.Smoking is h_ to health,but some people cannot get rid of it.7.The best way to get that _(二氧化碳二氧化碳)into the atmosphere is to warm the entire
23、 planet.globeatomharmful carbon dioxide统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版8.The new owners have tried to give the restaurant a more family-friendly _(气氛气氛).9.O_ is a kind of gas that is
24、 necessary for most animals and plants to live.10.I was surprised by the _(出席出席)of so many people at the meeting.atmosphereOxygenpresence统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版 II.用括号中所给单词或
25、短语的适当形式用括号中所给单词或短语的适当形式翻译下列句子。翻译下列句子。1.沙尘暴导致了连锁反应，最后造成沙尘暴导致了连锁反应，最后造成火车撞毁。火车撞毁。(lead to;chain)2.移动电话使得我们不论在何处都能与他移动电话使得我们不论在何处都能与他人交谈。人交谈。(make it possible for sb.to do sth.)The sandstorm led to a chain reaction which ended in a serious train crash.Mobile phones make it possible for us to talk to an
26、yone from anywhere.统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版4.请你告诉我怎样防止这种事情发生请你告诉我怎样防止这种事情发生好吗？好吗？(prevent.from.)3.新鲜空气对于身体健康必不可少。新鲜空气对于身体健康必不可少。(be fundamental to.)Could you please tell me h
27、ow to prevent this kind of thing from happening?Fresh air is fundamental to good health.统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版统编版优秀公开课课件下载PPT课件人教版高中英语必修三Unit 4 Language points in Reading（共33张PPT）人教版部编版
