2012年高考英语复习课件：UNIT 4 ASTRONOMY：THE SCIENCE OF THE STARS （新课标人教版必修3）.ppt

1、2012年高考英语复习课件：Unit 4 Astronomy：the science of the stars（新课标人教版必修3）Unit 4 Astronomy：the science of the starsUnit 4 Astronomy：the science of the stars美文佳句Unit 4 美文佳句诵美文 下图描述的是全球环境问题。请仔细观察这幅漫画，用英语写一篇短文，阐明漫画中所反映的问题，并提出解决此问题的方法(至少三点)。Unit 4 美文佳句注意：1仔细品味图中文字的韵味，可以适当发挥想象，不要做简单描述；2词数120左右。开头已经写好，不计入总词数；3作文中

2、不得提及考生所在学校和本人姓名。From the picture,we can see that_Unit 4 美文佳句From the picture,we can see that pollution is posing a threat to our earth,which comes in many ways.Millions of chimneys of the factories are pouring heavy smoke into air,which causes serious air pollution.A large amount of waste water from

3、 the factories pollutes water,making our rivers fishless and our water unfit to drink and swim in.Furthermore,a lot of trees have been cut down without proper plans,which contributes to the soil being washed away.It seems that we really have no clean place to live in.Unit 4 美文佳句The pollution is so s

4、erious that we have to find effective solutions to it.As far as I am concerned,the government should make laws to reduce polluted air.Some measures should be taken to purify the water before it is poured into the rivers or the seas.We should plant more trees to keep the soil in place.Whats more,peop

5、le should be further educated to realize the importance of environmental protection.Thus,we will have a clean and tidy environment.Unit 4 美文佳句背佳句1From the picture,we can see that pollution is posing a threat to our earth,which comes in many ways.从图中我们可以看到，污染从方方面面构成了对我们地球的威胁。赏析 该句是图画作文的万能开篇句，用现在进行时形象

6、地描述了图画的内容，为了提高句子的表达档次，还使用了一个which引导的非限制性定语从句。Unit 4 美文佳句2A large amount of waste water from the factories pollutes water,making our rivers fishless and our water unfit to drink and swim in.工厂排出的大量废水污染了水源，使我们的河流里没有了鱼，我们的水不能饮用也不能在里面游泳。赏析 该句使用了现在分词短语做结果状语，生动地描绘了污染的严重后果。3The pollution is so serious that

7、 we have to find effective solutions to it.污染是如此严重，以致我们必须找到行之有效的解决方案。赏析 该句使用了“sothat”结构，that引导的是结果状语从句。Unit 4 美文佳句4Whats more,people should be further educated to realize the importance of environmental protection.此外，应该进一步教育人们，使其意识到环境保护的重要性。赏析 该句使用了含有情态动词的被动语态，使用了“educate sb.to do sth.”结构的被动语态。Unit

8、4 课前热身课前热身.单词拼写1What are the differences between the American and British _(制度)of the government?2A number of gases forms the _(大气)3Her school report shows that she is weak at/in arithmetic and _(生物学)4If you are in trouble,do you believe God e_?5We should not only know the t_ but also how to apply i

9、t in practice.systemsatmospherebiologyxistsheoryUnit 4 课前热身6He spent the whole afternoon _(拔)weeds in the garden.7._(不同于)his brother,he works hard and makes much progress.8There is a v_ wind outside and the snow is so heavy.9What _(使困惑)me most is why they doesnt show up.10It is h_ to your health to

10、drink too much alcohol.pullingUnlikeiolentpuzzlesarmfulUnit 4 课前热身.完成短语1下蛋 _eggs2密切注视；当心；提防watch _3既然_that4产生；分娩give _to5及时；迟早_ time6阻止；制止prevent _7感到高兴、振奋cheer _8突发；爆发break _layoutnowbirthinfromupoutUnit 4 课前热身.完成句子1谢天谢地，医生终于及时赶到了这里。Thank God.The doctor_.2医生们正想方设法防止癌细胞扩散。The doctors are making an a

11、ttempt_.3很明显他昨天没有说实话。_he didnt tell the truth yesterday.arrived here just in timeto prevent cancer cells from spreadingIt was obvious thatUnit 4 课前热身4既然大家都到了，咱们开始上课吧。_,we can begin our class.5这场雨使我们走远路很困难。The rain _long distances.Now that everyone is heremade it difficult for us to walk单词点睛Unit 4 单词

12、点睛1unlikeprep.不同；不像 like prep.像，如 unlikely adj.不太可能的 alike adj.相似的，同样的 something like 几分像 Its like/unlike sb to do sth做某事实在像/不像某人Unit 4 单词点睛【温馨提示】unlike为介词，意为“与不同，不像”；而dislike则为动词，意为“不喜欢”，通常用作及物动词。【活学活用】(1)与约翰不同，汤姆不喜欢踢足球。_.(2)连招呼都不打这不像你。_.Unlike John,Tom dislikes playing footballIts unlike you not t

13、o say helloUnit 4 单词点睛2existvi.存在；生存 exist on(live on)sth靠某物生存 existence n.存在；实有 come into existence 产生；存在 in existence 现存的；现有的【活学活用】1同义句转换(1)This new country came into being in 1951.This new country _in 1951.came into existenceUnit 4 单词点睛(2)Water has three states:gas,liquid and solid.Water _three s

14、tates:gas,liquid and solid.2根据汉语意思完成句子(1)没有空气，人就活不了。A man _ without air.(2)你相信上帝的存在吗？Do you believe in _?exists incant existthe existence of GodUnit 4 单词点睛3puzzlen谜；难题vt.&vi.(使)迷惑；(使)为难 puzzled adj.(被)迷惑的；不解的 puzzling adj.令人迷惑的 be in a puzzle 不知如何是好 be in a puzzle about对迷惑不解 be puzzled by被迷惑 puzzle

15、over/about 苦苦思考 puzzle ones brain 苦思冥想；绞尽脑汁Unit 4 单词点睛【温馨提示】puzzled意为“迷惑的，不解的”，往往用于指人或人的表情、脸色等；puzzling意为“令人迷惑的，让人不解的”，往往指物。【活学活用】(1)_(令我百思不解的)is why they doesnt answer it.(2)Although the teacher has explained the problem three times,I _(还是对那个题迷惑不解)What puzzles meam still in a puzzle about itUnit 4

16、单词点睛4pulln&vt.拉(力)；拖；牵引力 pull back拉回来；缩回；使后退 pull down 拉下(窗帘等)；拆毁；拆掉(房屋等)pull out 拔出；(列车等)驶出，出站，启程 pull in (列车等)驶进，到达(车站)pull together 齐心协力，团结起来Unit 4 单词点睛【活学活用】(1)她去园子里拔了几颗葱头准备做饭。She went into the garden _ for dinner.(2)如果我们齐心协力，我们可以用一半的时间完成这项任务。_,we can accomplish the task in half the time.to pull

17、 a few onionsIf we pull togetherUnit 4 短语储存短语储存1in time 迟早(sooner or later)；最后(eventually)；及时(early or soon enough)on time 准时 ahead of time 提前，提早 all the time 一直；始终 at one time 曾经，一度 at a time 每次，逐一 from time to time 有时，偶尔 in no time 立刻；马上 time and time again 一次又一次；一再Unit 4 短语储存【活学活用】(1)If you keep

18、on,_(你终究会成功的)(2)Dont all speak at once!_(一次一个人讲),please.youll succeed in timeOne at a timeUnit 4 短语储存2preventfrom 阻止；制止 prevent/stop/keep sb from doing sth阻止某人做某事 protectfrom 保护不受侵袭；挡住；防御【温馨提示】(1)在主动语态中，stop和prevent的搭配中可省去from；而keep sb/sth from意为“阻止，使免于”，from不可省略。若在被动语态里，这三个搭配中的from均不可省略。Unit 4 短语储存

19、(2)keepdoing sth意为“使一直做某事”。【活学活用】(1)Doctors took action to _(防止这种疾病的蔓延)(2)Of course I cant _(阻止)your going abroad.(3)警察阻止他们携带武器。The police _ weapons.They _weapons.prevent/stop/keep thedisease from spreadingprevent/stopprevented/stopped/kept them from carryingwere prevented/stopped/kept from carrying

20、Unit 4 短语储存3cheer up 高兴起来；振作精神 cheer sb on(比赛中)以喝彩声鼓励；为某人加油 cheer the victory 为胜利而欢呼 Cheers!口语(用于祝酒)干杯！【活学活用】(1)这消息使他高兴起来。The news _.(2)振作起来！我们的困难很快就会过去。_!Our troubles will soon be over.cheered him upCheer upUnit 4 短语储存4now that 既然；由于 in that(相当于because,as)因为，由于 in that case 假如那样的话 not thatbut that不

21、是因为而是因为；非而是【相关拓展】表示原因的短语还有：due to 起因于；归功于 because of 因为(在句中作状语或表语)Unit 4 短语储存 on account of 为了的缘故 owing tobecause of/due to 由于；因为 thanks to 由于；多亏【温馨提示】now that(相当于since)是连词词组，用来引导原因状语从句，口语中经常省略that，只用now，这时now已经失去了“现在”的含义。【活学活用】(1)_(既然你已经完成了工作),you may go now.(2)He didnt attend the negotiation,_(因为他

22、病了)Since/Now that you have finished your workbecause/for he is illUnit 4 短语储存5break out 突发，爆发 break away from脱离(党派)；摆脱(控制)break down 毁掉；坏掉；(计划/谈判)失败 break up 打碎；拆散；(会议)结束；分裂(解体)break off (使)停止；中断；折断 break into 强行进入 watch out 密切注视；当心(单独用于祈使句)；提防 watch out for 密切注意，留意；提防 wear out 磨损；用坏 work out 计算出(答案

23、、数量等)；设法弄懂Unit 4 短语储存【活学活用】用以上所列短语的适当形式完成句子(1)You can _the answer by adding all the numbers.(2)My camera batteries_.We cant use it to take photos now.(3)Several fights _ last night.(4)_for the tall man.Hes a thief.work outhave worn outbroke outWatch outUnit 4 句型透视句型透视But when I tried to step forward

24、 I found,I was carried twice as far as on the earth and fell over.倍数as形容词/副词as【句式分析】该句型表示“是的几倍”，该句型也可用half,onefourth等词，表示“是的一半/几分之几”。Unit 4 句型透视【相关拓展】(1)倍数as many/much名词as(2)倍数形容词/副词的比较级than(3)倍数the名词of(4)The(计量)名词ofAbe倍数thatofB.【注意事项】(1)在“倍数the名词of”结构中，常用的名词有size，height，weight，length，width等。如：This

25、classroom is twice the size of that one.这个教室是那个教室的两倍大。Unit 4 句型透视(2)两倍用twice或double，不到一倍用分数表示，三倍或三倍以上一般用times来表示，如three times,four times。(3)在实际运用中，有时根据语境使用省略句式，应注意分辨。Unit 4 句型透视【活学活用】1根据汉语提示完成句子(1)Cats sleep _(是的两倍)people.(2)The earth is 49 _(大小是的倍)the moon.2根据汉语意思完成句子这条河是那条河的三倍宽。This river is _as t

26、hat one.This river is _of that one.This river is _than that one.twice as much astimes the size ofthree times as widethree times the widthtwice widerUnit 4 跟踪训练跟踪训练1Before the economic crisis came，John had sensed that the firm was to be ruined and he just in time.Apulled up Bpulled out Cpulled off Dp

27、ulled down【解析】B 考查动词短语辨析。句意为：在经济危机来临之前，John就觉察到这家公司即将倒闭，于是就及时退了出来。A“使车停下”，B“(火车)驶出车站，离开”，C“脱去，胜利完成”，D“拆毁(建筑物)，拖垮”。根据语意判断选B，表示“离开，辞职”。Unit 4 跟踪训练2Wang Meng won an Olympic gold medal in the womens 1,000m final of speed skating.！ACongratulations BCheer up CGood news DA pleasure【解析】C 考查交际用语。Congratulati

28、ons祝贺；Cheer up振作起来；Good news好消息；A pleasure很荣幸。根据情景可知此处选C。Unit 4 跟踪训练3.he is well again,he can go on with his English study.ANow that BIn case CSo long as DAs far as【解析】A 考查连词辨析。now that“由于，既然”。句意为：既然恢复了健康，他就可以继续学习英语。Unit 4 跟踪训练4The young dancers looked so charming in their beautiful clothes that we

29、took pictures of them.Amany of Bmasses of Cthe number of Dlarge amount of【解析】Bmany直接修饰可数名词，表很多；接介词of时，表部分，此时名词前需用定冠词the修饰。many修饰可数名词复数时不用of，故A不可选。number用来表示大量、很多时，应为a number of，故C不可选。a large amount of用来修饰不可数名词。B项masses of是非正式的表达方式，后跟可数名词。Unit 4 跟踪训练5Animals suffered at the hands of Man they were des

30、troyed by people to make way for agricultural land to provide food for more people.Ain which Bfor which Cso that Din that【解析】D 句意为：动物遭受着来自于人类的灭顶之灾，因为人们摧毁它们是为了开垦更多的耕地来给更多人提供食物。首先排除A，因为in which引导定语从句，根据语境此句为因果关系的状语从句。in that因为，符合语境要求。Unit 4 跟踪训练6Im thinking of the test tomorrow.Im afraid I cant pass t

31、his time.！Im sure youll make it.AGo ahead BGood luck CNo problem DCheer up【解析】D 答话人是在鼓励对方，特别是后面的Im sure youll make it(我相信你会成功的)是给对方勇气，因此只有cheer up(振作起来)符合题意。Good luck祝好运；No problem没问题，均不符合题意。Unit 4 跟踪训练7Some policemen should be sent to them _the trees.Aprevent;to cut down Bprevent;cut down Cstop;to

32、cut down Dstop;cutting down【解析】Dstop/prevent(from)doing sth意为“阻止某人做某事”，不能说stop/prevent sb to do sth。Unit 4 跟踪训练8Judging from his expression,this problem must be quite.Apuzzling;puzzling Bpuzzled;puzzled Cpuzzling;puzzled Dpuzzled;puzzling【解析】Dpuzzled“(被)迷惑的，困惑的”，往往指人或修饰表“人”的表情、脸色的词语，如expression，look

33、。puzzling意为“令人困惑的”，往往指物。Unit 4 跟踪训练9It was late to catch a bus after the party;,we called a taxi.Atoo much;besides Bmuch too;therefore Cvery;though Dfar too;also【解析】Bmuch too 意为“太”，修饰形容词或副词；分号前后为因果关系，故使用副词therefore。Unit 4 跟踪训练10.a certain doubt among the workers as to the necessity of the work.ATher

34、e existed BIt existed CThere had DIt had【解析】A 此处 There existed a certain doubt相当于There was a certain doubtThere be 结构表示存在，其形式多变，还有There stands，There lies等。Unit 4 跟踪训练11A fire in the shoe factory last night but_ soon.Abroke out;put out Bwas broken out;was put out Cbroke out;was put out Dwas broken ou

35、t;put out【解析】Cbreak out“发生，爆发”，不能用于被动语态，先排除B、D。put out“把扑灭”，为及物动词词组，此处应用被动语态。Unit 4 跟踪训练12Their mother dinner at the kitchen when a quarrel among the children.Awas preparing；was broken out Bprepared；was broken out Cwas preparing；broke out Dprepared；broke out【解析】C 短语break out为不及物动词短语，不可用于被动语态，可先排除A、B

36、两项。根据语境第一处用过去进行时态。句意为：妈妈正在厨房做饭这时孩子们争吵起来了。Unit 4 跟踪训练13Its Beth to drink so much.I wonder if shes all right.Aunlike Bdislike Clikely Dunlikely【解析】AIts unlike sb to do sth为常见句型，意为“某人做某事可不像他平时，不像是某人的行为”。unlike为介词，意为“不像”。Unit 4 跟踪训练14We pretend he is alive until after the festival,to_ unhappiness.Aprotect Bprotecting Cprevent Dpreventing【解析】C 不定式在此处为目的状语。prevent阻止，符合句意。protect是“保护，防护”的意思。Unit 4 跟踪训练15If you keep on your research,youll find out the result_.Ain time Bat no time Con time Dat the same time【解析】Ain time除了有“及时”的意思外，还有“迟早；总有一天”的意思，相当于sooner or later。