1、第04讲 必修1 Unit 4 Earthquakes讲Unit 1考纲要求语言知识：要求考生掌握并能运用英语词汇、语法基础知识以及所学话题。1.考纲内要掌握的词汇、短语和句型项目单词及其词性变化（语法填空必备）重点单词1burst vi.爆裂；爆发 n突然破裂，爆发2event n事件；大事3nation n民族；国家；国民national adj.国家的，民族的nationality n国籍4ruin n废墟；毁灭 vt.毁灭；使破产5suffering n苦难；痛苦suffer v受苦，遭受6extreme adj.极度的extremely adv.7injure vt.损害；伤害inj
2、ured adj.受伤的injury n伤害，损害8destroy vt.破坏；毁坏；消灭9useless adj.无用的；无效的；无益的useful(反义词)use v. & n使用，利用10shock vt. & vi.(使)震惊；震动 n休克；打击；震惊11rescue n. & vt.援救；营救12trap vt.使陷入困境 n陷阱；困境13electricity n电；电流；电学electric adj.用电的；带电的；发电的electrical adj.与电有关的；电学的14disaster n灾难；灾祸15bury vt.埋葬；掩埋；隐藏16shelter n掩蔽；掩蔽处；避身处
3、17damage n. & vt.损失；损害18frighten vt.使惊吓；吓唬frightened adj.受惊的；受恐吓的frightening adj.令人恐惧的19judge n裁判员；法官 vt.断定；判断；判决judgement n判断，判决20express vt.表示；表达n.快车；速递expression n表达expressive adj.有表现力的重点短语1right away立刻 2at an end 结束3in ruins 成为废墟 4dig out 掘出；发现5a(great) number of 许多；大量的 6give out 分发；发出(气味、热等)7th
4、ousands of 成千上万 8think little of 不重视；不假思索9blow away 吹走；刮走 10be proud of 以而自豪11instead of 代替 12be trapped in 陷入之中13be known for/as 因为/作为出名14bring in 引进；引来经典句型（高考书面表达必备）1In the farmyards, the chickens and even the pigs were too nervous to eat. 在农家院子里，鸡和猪都烦躁不安，以致不吃食。2It seemed as if the world was at an
5、 end! 世界似乎到了末日！3All hope was not lost. 不是所有的希望都破灭了。4Mice ran out of the fields looking for places to hide. 老鼠从田地里跑出来找地方藏身。5. Workers built shelters for survivors whose homes had been destroyed.工人们为那些家园遭受破坏的幸存者建了住所。必备语法（高级句型）名词性从句（2）2. 语法基础知识 名词性从句3. 话题自然灾害（人与自然）知识点1burst vi. (burst, burst) 爆裂；爆发n. 突
6、然破裂；爆发【归纳拓展】burst out 迸发；突然发作；突然起来 burst into 闯入；突然出现；突然起来；突然发作burst into tears/songs/laughter/angry speech突然哭/唱/笑/吵起来burst out crying/singing/laughing突然哭起来/唱起来/笑起来burst in 闯入burst with anger/grief/joy 勃然大怒/心痛欲绝/乐不可支be bursting to do 渴望，急着要做(某事)at a(one) burst 一阵；一口气；一举；一下a burst of anger 怒火的迸发【典例1】
7、单项填空1. One minute she burst into _, and the next she burst out _. We just couldnt catch her mood at any moment. Acrying; laughter Btears; laughing Ctears; laughter Dcrying; laughing 【答案】B【解析】考查动词短语的用法。burst into与burst out意思相近，但搭配不同；burst into后跟名词；而burst out后加doing。句意：她一会哭，一会笑的，不管什么时候，我们都不能理解她的情绪。故选B
8、2.Roses humor was_ make every studentburstinto_.Aso amused as tolaughterBso amusing as to laughterCsuch thatlaughingDso that laughing【答案】B【解析】这题考查so+adj+as to“如此以至于”，第二空考查burst into laughter“突然笑起来”。句意是：罗斯的幽默是如此的好笑以至于学生都笑起来了。选B。【变式】完成句子3.After that, he _(突然大哭起来)4.There came _(一阵笑声)5.He blew the ballo
9、on _(直到它爆裂为止)【答案】(1)burst out crying/burst into tears (2)a burst of laughter(3)until it burst知识点2ruin n. U毁坏；毁灭，崩溃C(pl.) 废墟，遗迹v. (使)破产，(使)堕落，毁灭【归纳拓展】in ruins 成为废墟；破败不堪be the ruin of 成为毁灭(堕落)的原因come/fall to ruin 毁灭，灭亡；崩溃；破坏掉bring sb. to ruin 使某人失败；使倾家荡产bring ruin upon oneself 自取灭亡ruin oneself 自取灭亡rui
10、n ones health/fame 毁坏某人的健康/名誉【典例2】根据汉语提示完成句子(1)An earthquake_(使全城到处是颓垣断壁)(leave)(2)Some prewar constructions were abandoned and eventually _(成了废墟)(3)That one mistake _ (毁坏)his chances of getting the job.【答案】(1)left the whole city in ruins(2)fell/came to ruin(3)ruined【变式】His future lies _ because he
11、was caught stealing in the shop and put into prison.Aas usualBin ruinsCby mistakeDon purpose【答案】B【解析】试题分析：句意：他的前程全毁了，因为他因在商店偷窃被逮捕并关进了监狱。as usual：像往常一样 in ruins：严重受损，破败不堪，失败 by mistake：错误地 on purpose：故意地。根据语境故选B。考点：考查介词短语辨析知识点3injure vt. 损害，伤害【归纳拓展】injury n. 伤，伤口；伤害 injured adj. 受伤的，受委屈的do an injury
12、to sb.伤害某人 the injured伤员an injured look/expression委屈的样子/表情 injured pride/feelings受到伤害的自尊/情感【典例3】1.（2019天津高三月考）-With his leg _ in the game, Im afraid Tony cant take part in the next match.-I _ his home the other day, and his mum said he was still in hospital.Ainjuring; have contacted Bbeing injured;
13、have contactedCto be injured; contacted Dinjured; contacted【答案】D【解析】考查动词辨析。句意：因为他的腿在比赛里受伤了，恐怕Tony不能参加下一场比赛了。几天前我联系了他的家人，他妈妈说他还在住院。第一空中过去分词injured表示“受伤”的状态，第二空 所在句子的时间状语是the other day，表示过去时，所以要填过去式contacted。故D项正确。2.（2019黑龙江哈尔滨三中）The driver of the car was killed in the crash but both passengers _.A. e
14、scaped from injuryB. escaped from injuredC. had a lucky escapeD. was narrowly injured【答案】C【解析】考查固定短语辨析。句意：汽车司机在车祸中丧生，但两名乘客都幸运地逃脱了。A. escaped from injury幸免于难；B. escaped from injured受伤；C. had a lucky escape侥幸脱险；D. was narrowly injured受了轻伤。根据句意可知故选C。【变式】单句填空1.（2019江苏泰州中学高考模拟）Having been treated in the
15、hospital for as long as six months, the man _（injure） in the car crash is now eventually back on his feet.【解析】injured考查过去分词。句意：在医院接受了长达六个月的治疗后，在车祸中受伤的那个人现在终于恢复了健康。此处是过去分词短语作定语。故填injured。2.（2018北京期末）He tried his best to comfort the _（injure）passengers and told them help was on the way.【解析】injured考查过去
16、分词。句意：他尽力安慰受伤的乘客，告诉他们救援已经在路上了。The injured故填injured。知识点4shock n. U；C打击；震惊；震动；休克vt. 使震惊，使惊愕【归纳拓展】be shocked at/by (doing) sth. 被震惊be shocked to do sth. 惧怕做某事It shocked sb. to see/hear.看见/听到使某人震惊。(be) a shock to sb. 对某人来说是个打击【温馨提示】shocked adj. 感到惊奇的，惊讶的(主语多为人)shocking adj. 令人气愤的，令人惊讶的(主语多为物)【典例4】完成句子(1
17、)_ the sight.这情景使我大为震惊。(2)If you touch a live wire, _如果你摸带电的线，就会触电。(3)The message _这条消息使他震惊。【答案】(1)I am/was shocked at/by(2)you will get a shock(3)makes/made him shocked【变式】(4)The _ news made all the people present _. Ashocking; shockingBshocking; shockedCshocked; shocking Dshocked; shocked【解析】B sho
18、cking令人吃惊的； shocked对感到吃惊；通常指人的特性。句意：这个令人吃惊的消息令所有在场的人感到吃惊。（5）Have you heard of _ death of Steven Jobs? Yes. It must be_shockto Apple fans.Athe; theBa; theCthe; aDa; /【解析】C考查冠词题。第一格特指乔布斯的死；第二格a shock是指一件令人惊讶的事情。知识点5bury vt. 埋葬；掩埋；隐藏【归纳拓展】bury oneself in study 埋头研究bury oneself in (doing) sth. 专心致力于(做)某
19、事be buried in thoughts 沉思bury ones face in ones hands 双手掩面be buried alive 被活埋；隐居【温馨提示】表示“专心于，致力于”意义的短语还有：be devoted to, be addicted to, be absorbed in等。【典例5】1. _ in thought, I didnt notice what was happening.AHavingburiedBBuryingCBuriedDTo beburied【答案】C【解析】试题分析：考查形容词用法。固定词组Be buried in沉浸于；本题的形容词短语bu
20、ried in修饰主语I的情况。句意：陷入沉思中，我没有注意到所发生的事情。故C正确。考点：考查形容词用法2._ deep down in the earth for thousands of years, the dead forest has rotted away and become coalAHavingburiedBBeingburiedCBuriedDTo beburied【答案】C【解析】试题分析：句意：被埋在了泥土中数万年，死亡的森林已经腐烂变成了煤。动作bury与其逻辑主语the dead forest是被动关系，故用过去分词作原因状语，选C。考点：考查过去分词的用法3.
21、After starting work, Cao spent his evenings _ in his books and was eventually admitted to a secondary technical school.AburyingBburiedCbeingburiedDhavingburied【答案】B【解析】试题分析：考查非谓语动词 句意：在开始工作后，Cao花费晚上的时间埋头读书，最后被一所中等专科学校录取了。此题容易误选A，spend time/money doing sth“花费时间或者钱做某事”，而此处只表示埋头读书这一状态，不强调动作，be buried i
22、n “埋头于”，做状语时省略be动词，答案选B。考点 : 考查非谓语动词【变式】翻译句子(1)He was sitting with his head buried in a book.他坐着_。（1）埋头看书(2)He walked slowly, his hands buried in his pockets.他走得很慢，两手_。（2）插在衣袋里(3)After the divorce, she buried herself in her work.离婚后，她_。（3）埋头于工作知识点6judge v. 断定；判断；判决n. 裁判员；法官；评判员【归纳拓展】judgment n. 判断，审
23、判，意见，判断力 judging by/from 从上看，根据判断judge sb./sth. from/by. 从来判断 judge between right and wrong 判断是非as far as I can judge 据我判断，我认为 in ones judgement 依某人看来，按某人的看法【典例6】1. _ from what she said at the meeting, she must have lied to all of us.AJudgedBJudgingCTojudgeDJudge【答案】B【解析】试题分析：考查评述性状语：句意：根据她在开会的时候说的话
24、，她一定对我们所有的人撒谎了。Judging by/from是评述性状语“根据来判断”，不需要考虑和后面的主语的关系，选B。2. It was so dark in the cinema that I could hardly _ my friend.AignoreBjudgeCrecognizeDrealize【答案】C【解析】动词辨析。A忽视，不理睬；B判断；C认出；D意识到。句意：电影院里如此黑，以至于我几乎不能认出我的朋友来。根据句意说明C正确。3.to be the best one in the group, she had an opportunity to enter for
25、the final competition.AJudgingBToJudgeCHavingjudgedDJudged【答案】D【解析】试题分析：考查分词做状语。本句中的动词judge与句子的主语she构成被动关系，故使用过去分词做状语。句意：被认为在这一群里最好的一个人，她有机会进入最后的决赛。故D正确。考点：考查分词做状语【变式】翻译句子1)Dont judge a book by its cover. 勿_取人。（1）以貌(2) Judging from/by his accent, he must be a southerner.根据他的口音_，他一定是个南方人。（2）判断(3)He w
26、as judged to be the best actor of this year.他_今年的最佳男演员。（3）被评为知识点7at an end 终止；结束【归纳拓展】bring.to an end (使)结束，终止 come to an end 结束，终止at the end of 在尽头(末) by the end of 到末为止(常与完成时态连用)in the end 最后，终于(后不加 of短语) on end 一连，连续to the end 到底 without end 没完没了make ends meet 收支相抵【典例7】英汉互译(1)He didnt answer it r
27、ight away._(2)立刻给他打电话。(right away)_(3)We will take care of this right away._(4)此刻我们不能谈论这个问题。(right now)_【答案】(1)他没有马上回答。(2)Call/Ring him (up) right away.(3)我们将立刻处理此事。(4)We cant discuss this question right now.【变式】(1)The year is at an end.这一年已到_了。（1）年终(2)The meeting came to an end.会议_了。（2）结束(3)Go stra
28、ight and youll find the hospital at the end of the road.一直往前走，你会在_找到这家医院。（3）这条路的尽头(4)They argued for two hours on end.他们_辩论了两个小时。（4）一连知识点8a (great) number of 许多；大量的【归纳拓展】a large/great/good number of; a great/good many; a good few; quite a few可数名词复数many a/more than one单数可数名词单数谓语动词a great/good deal of
29、; a great/large amount of; quite a little不可数名词a lot/lots of; a great/large quantity of; large quantities of; plenty of可数名词复数或不可数名词【温馨提示】 (1)a number of是“许多，大量”的意思，后接可数名词复数，谓语动词用复数。the number of 是“的数目”的意思，谓语动词用单数。(2)large quantities of (pl.)/U做主语，谓语动词用复数。large amounts ofU n做主语，谓语动词用复数。【典例8】(1)_(许多学生)
30、 find it hard to find an acceptable job after graduation.(number)(2)A great number of new factories _(被建立)in my hometown since 1987.(3)_ (大量的金钱已被花) on the new hospital since 1980.【答案】(1)A great/large number of students(2)have been built/set up(3)Lots of/A lot of money has been spent【变式】A large numbe
31、r of students in our school _ from the countryside; the number _ growing these years.Ais; has been Bare; has been Cis; have been Dare; have beenB考查主谓一致。“a number of复数名词”作主语，谓语动词用复数形式；the number of“的数量”作主语时，谓语动词用单数形式。句意：我们学校很多学生来自农村，并且来自农村的学生数量这些年来一直在增长。知识点10as usual【归纳拓展】usual adj.通常的；平常的usually adv
32、. 通常地；平常地than usual 比平常【典例10】1. Lily got up at 6:00 oclock_but she realized it was Sunday soon.Aas usualBas possibleCat presentDat last【答案】A【解析】试题分析：词义辨析。A和通常一样；B尽可能；C目前；现在；D最后，终于；句意：Lily和往常一样在六点就起床了。但是她很快就发现是周日。根据句意说明A正确。考点：考查词义辨析2. How often do you eat out? _, but usually once a week.AI have no id
33、eaBIt dependsCAs usualDGenerally speaking【答案】B【解析】试题分析：句意：你多久外出就餐一次？视情况而定，但是通常是一周一次。 A. I have no idea 不知道 B. It depends 看情况而定 C. As usual像平常一样 D. Generally speaking一般来说。根据语境判断，故选B。考点：考查情景交际的用法。【变式】Lily got up at 6 oclock_（像往常一样），but she realized it was Sunday as soon as she prepared her school bag.
34、Lily像往常一样六点钟起床，但当她准备书包时才意识到那是星期天。【答案】as usual【教材原句】It seemed as if the world was at an end! 世界似乎到了末日！【句法分析】It seems (to sb.) that. (对某人来说)似乎Sb. seems to do/to be doing/to have done.It seems as if/though. “似乎(好像)”，可接虚拟语气。seem(to be)n./adj. 似乎是There seems to be. 好像有It seems so. (So it seems.) 似乎是那样。【例
35、句研读】It seemed that he had known the truth.He seemed to have known the truth. 他好像知道了真相。His father seems (to be) strict.他父亲似乎很严厉。There seemed to be a voice in the distance.似乎远处有人说话。It always seemed as though everything in my childhood had just happened.我童年的一切仿佛刚刚发生一样。【拓展归纳】seem/look/appear(1)seem 暗含有一
36、定的根据，往往是接近实际的判断，后可接介词、形容词、不定式或从句。(2)look 着重由视觉而得出的印象，可与 like连用，但不能与不定式连用。可接 as if从句，不接 that从句。(3)appear 强调外表给人的印象，而且事实往往并非如此。可接 that从句，不接 as if从句。【典例1】1. Today we have chat rooms, text messaging, emailing but weseem_ the art of communicating face-to-face.AlosingBto be losingCto be lostDhaving lost【答
37、案】B【解析】考查固定结构。seem to do sth好像要做某事；再根据时间状语Today，应指我们似乎正在失去面对面的交流艺术。所以选B。2. _, nobody was injured in the accidentAAs it mayseemstrangeBBecause it mayseemstrangeCStrange as it mayseemDStrange as may itseem【答案】C【解析】这题考查as用于倒装句表示让步的用法，句型是：形容词/名词/副词/动词+as/though+主语+谓语，这句话提前的是形容词，句意是，虽然看起来有些奇怪，但在事故中没有人受伤。
38、3.What a noise! I can hardly stand it.It _ as if they are having a party next door.AlooksBseemsCappears Dhappens【答案】B 【解析】C、D项不接 as if从句。A项不合题意。考查 It seems as if.句式。考点2 too . . . to . . .结构【教材原句】In the farmyards, the chickens and even the pigs were too nervous to eat. 在农家院子里，鸡和猪都烦躁不安，以致不吃食。【句法分析】too
39、.to. 句型表示“太以至于不能(表否定)”，可转化为 not.enough to.和 so.that.。提示：(1)当 too后接 easy, ready, happy, willing, eager 或 anxious时，to 后的动词表示肯定。例如：The book is too easy to understand.这本书太容易理解了。He was too anxious to leave.他急于离开。(2)too.not to. 句式表示肯定意思。例如：He is too careful not to have noticed it.他那么细心，不会不注意到这一点的。 (3)too.
40、to.中 too前面用了否定词(如 never)时，表示肯定。例如：It is never too late to mend.改过不嫌晚。(4)only too.to.表示肯定，其中 too后的形容词多数是表示某种心情的，如 glad, pleased, willing, thankful, delighted, determined 等，也有描绘性的形容词，如 good, kind, true等。例如：The girl is only too kind to help us.这姑娘非常乐于帮助我们。【例句研读】The child is too young to dress himself.T
41、he child is not old enough to dress himself.The child is so young that he cant dress himself.这孩子太小，不能够自己穿衣。【典例2】1.Jim is a kind boy. He is _willing to help his classmates.Aso BsuchCmuch Dtoo【答案】D 【解析】tooglad/pleased/willing.to.表示肯定意义。如用A项应改为 so.as to才对。2. Allen had to call a taxi because the box was
42、 _ to carry all the way home.A much too heavy B too much heavy C heavy too much D too heavy much【答案】A【解析】考察too much和much too用法。Much too修饰形容词或者副词；too much修饰不可数名词。结合句意可知A正确。句意：Allen不得不打的，因为盒子实在太重了不能一路上带回家。3. What do you think of the book I lent to you yesterday ?Oh, not too bad.Its not too difficult_.
43、A reading B.to be read C.to read D.being read【答案】C【解析】试题分析：考查不定式用法。当不定式前面有形容词是对主句的性格特征进行说明的时候，使用不定式的主动语态对名词进行说明。如： The book is easy to understand。句意：你认为我昨天借给你的那本书怎么样？还不错，不是很难读。故C正确。考点：考查不定式用法考点3 部分否定和全部否定【教材原句】All hope was not lost.不是所有的希望都破灭了。【句法分析】此句为部分否定。all, both, each, every, everybody, everyth
44、ing, complete, completely, always, all the time, whole, wholly, entirely, altogether 等代词、形容词和副词与否定词 not连用，构成部分否定，表示“不都、并非都”的意思。【例句研读】All that glitters is not gold.发光的并不一定都是金子。Both of the brothers dont like the film.兄弟俩不都喜欢这部电影。Not everything went well with him.他并非每件事情都顺利。Not all of the rich are happ
45、y.不是所有有钱人都幸福。 The rich are not always happy.有钱人并非总是幸福。You cant fool all the people all the time.你未必总是能愚弄所有的人。【拓展归纳】全部否定用：no one, none, neither, nobody, nothing，以及 not.any/either来表示。None of them are right. 他们都不对。Neither of us will go. 我们俩都不去。Nobody can win me. 没人能赢我。【典例3】1.The exam wasnt difficult at
46、 all, was it?No, but I dont believe _could pass it.Asomebody BanybodyCeverybody Dnobody【答案】C【解析】not与 everybody 连用表示部分否定。2.Which of the two computer games did you prefer?Actually I didnt like _.Aboth of them Beither of themCnone of them Dneither of them【答案】B【解析】not. eitherneither 表示全部否定。3. “All the s
47、tudents dont work hard.” means “_”ANot all the students work hard.BEvery student works hard.CNone of the students works hard.DAll of the above.【答案】A【解析】表示整体意义的词用于否定句构成部分否定。句意：不是所有的学生都努力。4. Its impossible for all the people to get jobs because _of them is not fit for them.Aevery oneBallCnot allDnone【
48、答案】A【解析】试题分析：考查代词：A. every one每个人B. all所有人C. not all不是都D. none没有人，这几个选项都可以搭配of，但词义不同，所以结合句意：每个人都得到工作是不可能的，因为不是每个人都适合它们的。因为谓语是is，选A。考点：考查代词5. Not all the students follow the rules. Which of the following statement has the same meaning？ANone of the students follow the rules.BAll the students dont foll
49、ow the rules.CNo students follow the rulesDAll of the above【答案】B【解析】试题分析：考查部分否定：句意：不是所有的学生都遵守规则。Not all=allnot“都是部分否定”，none和no都是全部否定，选B。考点：考查部分否定考点4 名词性从句【典例4】1(2019厦门一中高三模拟)His success in digital field proved _ it took to be a best CEO what句意：他在数字领域的成功证明了要想成为最好的CEO所需要的条件。proved后接宾语从句。因为从句中took缺宾语，且
50、该宾语意为“的事物(东西)”，填what。2(2019河北省保定市月考)Built over 2,200 years ago in _ is now Sichuan Province in Southwest China, this amazing engineering achievement is still used todaywhat句意：2,200多年前在现在的中国西南部的四川省，建造的这个惊人的工程至今仍在使用。what引导宾语从句，作介词in的宾语，同时在宾语从句中作主语。3(2019广东省五校高三联考)In Japan, it is recognized that the be
51、st communication is _ you dont speak at allwhen句意：在日本，人们公认最好的交流是当你什么也不说时。根据语境可知，此处填when引导表语从句。4(2019河北曲周县一中高三模拟)Id like to start my own businessthats _ Id do if I had moneywhat句意：我想自己创业，那是我有钱后要做的事。此处引导表语从句，且在从句中作do的宾语，意为“的事情”。故用what。5(2019海南儋州一中高三统测)Today, people still come and goto see _ the Canadi
52、an gold rush happenedwhere句意：如今，人们仍然来往这里看加拿大的淘金热在哪里发生的。分析句子结构可知，宾语从句中缺少地点状语，故填where。考点5话题写作自然灾害【典例6】写作指导本单元写作文体是介绍自然灾害的说明文。描述自然灾害首先要说明该灾害的基本情况，然后根据需要选择角度，简明扼要而又重点突出地介绍，力求真实准确，恰如其分。写好自然灾害类文章的关键是实事求是、简明扼要。自然灾害类说明文一般包括以下几点：灾害发生的时间、地点等；灾害的危害及其发生规律；补救措施；经验教训或建议。 自然灾害类说明文的特点：1. 时态相对统一：多用一般现在时和一般过去时，有时为了表达
53、的需要会在个别地方采用其他时态。2. 一般采用客观表述，避免主观色彩。3. 叙述格式比较固定。通常为：事件描述灾害提出建议等。常用句型：1.灾害的发生：There was/is.in.；A terrible.hit/struck. 2.灾害的影响：The disaster caused.deaths/ injuries. The disaster caused great damage to. 3.经验及建议：When you.you should.；If., you had better. 要点词句：1.带来巨大灾难 cause great damage 2.造成 result in3.逼近
54、 advance towards4.全球变暖 global warming5.洪水会给人类带来巨大的灾难。Flood can cause great damage to property and peoples lives.6. 洪水到来时，河水上涨。When floods come，the river is rising higher and higher.7.洪水以迅雷不及掩耳之势吞没房屋，桥梁。Before you realize something, the water is swallowing the houses and streets.写作范文FloodFlood is one
55、 of the worst natural disasters. It can cause great damage to property and peoples lives. What are the causes of floods？The heavy rain for weeks can cause floods, and typhoon, hurricane and tsunami can also bring floods. Scientists are worried that the global warming can make the polar icecaps melt
56、and will result in the whole worlds flooding.Before floods come, you can see the river is rising higher and higher. As they are coming, you will first hear a loud noise，which grows to a terrible roar. You will see a wall of water quickly advancing towards you. Before you realize something, the water is swallowing the houses and streets.Usually after the flood, it seems that nearly everything is destroyed. Bricks and leaves cover the ground and the houses and bridges fall, too. Thousands of people are made homeless. Many of them are injured and some even die during the flood.