+Lesson+25+Let's+do+an+experiment-冀教版九年級(jí)英語全冊(cè)

Lesson25Let′sDoanExperiment!Learningaims學(xué)習(xí)目標(biāo)experiment/?k'sper?m?nt/

n.實(shí)驗(yàn)；試驗(yàn)jar/d?ɑ:/

n.廣口瓶；罐子upside/'?psa?d/

n.上部；上邊pour/p?:/

v.倒出；傾倒correct/k?'rekt/

adj.正確的；恰當(dāng)?shù)膕cientific/?sa??n't?f?k/

adj.科學(xué)的method/'meθ?d/

n.方法；辦法raincoat/re?nk?ut/

n.雨衣force/f?:s/

n.力量v.迫使；強(qiáng)迫pressure/'pre??/

n.壓力，壓強(qiáng)；擠壓conclude/k?n'klu:d/

v.得出結(jié)論；斷定NewwordsNewPhraseturn...upsidedown

把......翻轉(zhuǎn):倒過來pourout

涌出scientificmethod

科學(xué)方法take...off

把......拿開Thinkaboutit1.Whatkindsofexperimentshaveyoudoneinscienceclass?2.Ifyouholdajarthatisfilledwithwaterupsidedown，whatwillhappen?Brian：Let′sdoanexperiment.Ifillajarwithwater.Icoverthetopwithapieceofcardboardandholditthere.ThenIturnthejarupsidedownandtakemyhandoffthecardboard.Canyouguesswhatwillhappen?Danny：Ithinkthefloorwillgetwet.Weshoulddothisexperimentoutside，Brian.Jenny：Ithinkthecardboardwillholdthewater.Danny：Idon′tthinkso.Jenny：Youthinkthewaterwillpourout，Danny.Ithinkthewaterwillstayinthejar.Let′stestwhichtheoryiscorrect.Brian：Goodidea，Jenny.That′scalledthescientificmethod.

Jenny：IamsosureofmytheorythatBriancandotheexperimentoveryourheadandIknowyouwon′tgetwet.Danny：Well，let′stryit!Brian：Areyouready，Danny?Danny：No!Wait!(Heputsonaraincoatandsitsdown.)NowIthinkI′mready.Jenny：Brian，takeyourhandoffthecardboard.Danny，JennyandBrianareinthelab.Danny：No!(Dannycloseshiseyestightly，andBriantakeshishandoffthecardboard.Thewaterstaysinthejar.)Jenny：See，Danny!Danny：Howisthatpossible?Brian：Theforceoftheairkeepsthewaterinthejar.Itisstrongenoughtoholdthewater.Danny：Wow!Brian：Sowhathavewediscovered？Jenny：Wehavediscoveredthattheairpressurehelpsthecardboardholdthewaterinthejar.Brian：Right.Whatdoyouconclude，Danny?Danny：IconcludethatairisstrongerthanIthought.LanguagePoints1.Let′sdoanexperiment!experiment/?k'sper?m?nt/n.實(shí)驗(yàn)；試驗(yàn)“做實(shí)驗(yàn)”可用do/make/carryoutanexperiment表達(dá)。eg:Dannyisdoing/making/carryingoutanexperimentinphysics.丹尼正在做一個(gè)物理實(shí)驗(yàn)。2.Ifillajarwithwater.我用水把瓶子裝滿。

fill…with…用…裝滿……Hehasfilledhiscasewithmanybooks.他已經(jīng)把書裝滿了箱子。

cover…with…用……蓋住……3.ThenIturnthejarupsidedownandtakemyhandoffthecardboard.

turn...upsidedown“把......翻轉(zhuǎn)過來”.upsidedown“正面朝下”rightsideup“正面朝上4.Youthinkthewaterwillpourout,Danny.pour是及物動(dòng)詞，意為“傾倒；倒出；澆”，其后可以接名詞/代詞做賓語。pourout表示“涌出；傾倒出”。eg.Thepeoplepouredoutofthebuildingwhentheyheardthefirealarm.當(dāng)聽到火警時(shí)，人們從大樓里蜂擁而出。拓展pour可以接雙賓語或介詞短語，即pour

sb.sth.=poursth.forsb.為某人倒某物。ShallIpouryouacupoftea?=ShallIpouracupofteaforyou?我給你倒杯茶好嗎？pour...in/into…把……倒入/灌入……里；pour…out把……倒出。5.That′scalledthescientificmethod.That′scalled…那被叫做……此句是一般現(xiàn)在時(shí)的被動(dòng)語態(tài)，That在這句話中充當(dāng)主語，iscalled構(gòu)成被動(dòng)語態(tài)結(jié)構(gòu)。一般現(xiàn)在時(shí)的被動(dòng)語態(tài)的構(gòu)成為：be動(dòng)詞(am/is/are)＋動(dòng)詞的過去分詞。eg：Moremoneyissavedbyusingbothsidesofpaper.通過使用紙的兩面，更多的錢被節(jié)省下來了。6.I’msosureof...won’t

getwet.besure+that從句表示“認(rèn)為…一定…”而benotsure表示不確定.e.g.I’msureshewillcomehere.我確信她會(huì)來。I’mnotsurewhenhe’llcomehere.我不能肯定什么時(shí)候來這兒。Trytodotheexperimentinthislessonyourself.Tasktips：Whathappenswhenyouuselesswater，morewater，wetcardboard，ordifferentkindsandsizesofjars?Let'sDoIt!Whatisscience?Canyouexplain?Pleasemakeiteasyformybrain.It′saboutmakingobservations.Whydoonionsmakemecry?Whydocloudsgoby?Whatkeepsthebirdsinthesky?That′sjustscience.Let'sDoIt!Listenandsingalong.It′saboutmatter—theuniverse.Whydoesacarstayontheroad?Whyistheregreenalloveratoad?Whycan′tIcarryaheavyload?That′sjustscience.WhatIsScience?1.Thedininghallis_______tohold300people.A.enoughbigB.enoughsmallC.smallenoughD.bigcnough2.-Youaresosad.Whathashappencd_______you?-Ifailedthemathstest.A.ofB.withC.atD.to3.-Whatmadeyou_______?-ThenovelwrittenbyLaoShe.A.cryB.tocryC.cryingD.cried4.Idon'tthinkyoucananswerthisqucstion,_______?A.doIB.don'tIC.doyouD.canyou5.Let's_______apartytonight!A.hasB.haveC.havingD.hadDDDAB1.Welearnedsomenewwordsandphrases.experiment,jar,upside,pour,correct,scientific,met