高中英语新人教版必修第三册Unit4SpaceexplorationSectionCDiscoveringUsefulStructures课件

SectionC

DiscoveringUsefulStructures&ListeningandTalkingⅠⅡⅢⅠ.知识体系图解

recyclemusclelackfloatotherwisebeyondsolarsolarsystemcurrentsufficientsoaptowelⅠⅡⅢmicrowavetissuefacilitykeen弄懂;弄清楚;弄明白为了决定做结婚由于保持健康控制;掌控实现梦想用……做实验放弃ⅠⅡⅢⅠⅡⅢⅡ.选词填空1.They

theirgarbagebecausetheycareabouttheenvironment.

2.Theresearch

solidevidence,andtherefore,itsconclusionsaredoubtful.

3.Canyoutellthepupilswhyshipsareableto

onthesea?

4.Welostourwayinthatsmallvillage.

wewouldhavevisitedmoreplacesofinterest.

5.Ihaven’tseenSarasinceshewasalittlegirl,andshehaschanged

recognition.

otherwise,recycle,lack,beyond,floatrecyclelacksfloatOtherwisebeyondⅠⅡⅢⅢ.用所给动词的适当形式填空M:Ihavesomethinggood1.

(tell)you,Jennifer.

W:What’sit?M:Aftertryingmybest,Igetachance2.

(have)aten-daypaidleave!

W:Wow!HowIenvyyou!Doyouhaveanyplans?M:Parisisagoodplace3.

(go)sightseeing.

W:Youcantakethechance4.

(travel)aroundEurope.AftertravellingFrance,youcanhaveatourofSwitzerlandbytrain.

M:It’sagoodidea,butIthinkthebestway5.

(get)thereisbyplane.

totell

tohavetogototraveltoget重点词汇重点句式重点语法随堂练习1.lack

n.缺乏;短缺vt.没有;缺乏【课文原句】Astronauts’bonesandmusclescangetveryweakinspaceduetothelackofgravity,sotheyneedtoexerciseeveryday,whichwillhelpthemstayhealthy.在太空中,宇航员的骨骼和肌肉会由于缺乏重力而变得非常脆弱,所以他们每天都需要锻炼,这会帮助他们保持身体健康。【词汇精讲】句中的lack是名词,意为“缺乏”;lack还可作动词,意为“没有;缺乏”。Despitehislackofexperience,hegotthejob.他虽然经验不足,但还是获得了这份工作。Welackedconcentrationanditcostusthegoalandthegame.我们注意力不够集中,结果丢了球,输了比赛。Certainvitalinformationislackinginthereport.该报告缺少某些关键信息。重点词汇重点句式重点语法随堂练习【词汇拓展】Ifinditquiteboringtochatwiththosewhoare

lacking

inhumour.我觉得和那些缺乏幽默感的人聊天很无聊。Moreandmorehighrisebuildingshavebeenbuiltinbigcitiesfor/through

lack

ofspace.由于缺乏空间,大城市中建造了越来越多的高层建筑。【温馨提示】lack作名词时常与介词of连用;作动词时可作及物动词直接加宾语(不能用于被动语态和进行时),也可作不及物动词,后常与介词for连用;形容词lacking常与in连用。重点词汇重点句式重点语法随堂练习重点词汇重点句式重点语法随堂练习

重点词汇重点句式重点语法随堂练习重点词汇重点句式重点语法随堂练习【词汇拓展】有时otherwise可用在隐含的条件句中,句子用虚拟语气。Wedidn’tknowhistelephonenumber;otherwisewewouldhavetelephonedhim.我们不知道他的电话号码,否则我们就给他打电话了。Heisoldandsick,otherwisehewouldbeworkingrightnow.他又老又病,否则他现在就要工作了。重点词汇重点句式重点语法随堂练习

重点词汇重点句式重点语法随堂练习3.beyond

prep.在更远处;超出【课文原句】Sendingpeopletootherplanetsorevenbeyondthesolarsystemisnotaneasygoaltoachieve.将人类送往其他行星甚至太阳系之外并不是一个容易实现的目标。【词汇精讲】句中的beyond是介词,意为“更远处;超出”。Theyhavediscoveredstrangelandsbeyondthesea.他们已经发现了海外奇异的土地。Itisbeyondmypowertoarrangethemeeting.安排这样的会议超出了我的能力。重点词汇重点句式重点语法随堂练习【词汇拓展】

重点词汇重点句式重点语法随堂练习

重点词汇重点句式重点语法随堂练习1.During

a

spacewalk,astronauts

have

to

move

slowly

so

that

they

can

keep

their

bodies

under

control.在太空行走中,宇航员必须缓慢地移动,这样他们的身体才能得到控制。【句式剖析】sothat=inorderthat,意为“以便”,引导目的状语从句,从句中常用may,can,could等情态动词。Leaveyouritineraryso

thatwecanreachyouincaseofemergency.请把你的旅行计划留下来,以便我们在遇到急事时和你取得联系。Herparentspinchedandscrapedso

thatshecouldstudysingingabroad.她父母省吃俭用好让她出国学习声乐。重点词汇重点句式重点语法随堂练习【句式拓展】sothat也可引导结果状语从句,从句中一般没有情态动词。Heworkedhardathislessons,so

thathegainedhighgradesintheexams.他努力学习,结果考试获得了好成绩。重点词汇重点句式重点语法随堂练习

重点词汇重点句式重点语法随堂练习2....it

would

take

over

two

years

to

get

to

the

closest

planet,Mars,and

back.……到达最近的行星,火星,并返回,需要超过两年的时间。【句式剖析】Ittakes/tooksbsometimetodosth.意为“做某事花费某人……时间”。It

takesalongtimetogetfromLondontoSydney.从伦敦到悉尼花了很长时间。重点词汇重点句式重点语法随堂练习【句式拓展】It’sgoingtocostmeover100,000dollarstobuyseveralnewtrucks.买几辆新卡车将花掉我10万多美元。Ispenttenyuanonthebook/in

buyingthebook.=Thebookcostmetenyuan.=Ipaidtenyuanforthebook.我花了10元钱买这本书。重点词汇重点句式重点语法随堂练习

重点词汇重点句式重点语法随堂练习重点词汇重点句式重点语法随堂练习2.动宾关系OnSundays,healwayshasalotofletterstowrite.星期天,他总是有许多信要写。Theteacherleftusalotofproblemstosolve.老师给我们留了许多道题要解答。Hecanfindnoonetomakefriendswith.他找不到可交朋友的人。注意:由于动词不定式与其修饰的词之间往往有动宾关系,因此,如果该不定式是不及物动词,其后应有必要的介词。Thereisnothingtoworryabout.没什么可担心的。Brownhassomethingimportanttodealwithatpresent.目前布朗有重要的事情要处理。重点词汇重点句式重点语法随堂练习3.同位关系Hebrokehispromisetowritetohisparentsregularly.他没有遵守诺言定期给他父母亲写信。Westudentsshouldhavethecouragetofaceanydifficulty.我们学生应该有勇气面对任何困难。4.修饰关系Nowitistimetobeginourclass.现在是上课的时间了。Ineedsomewheretotakeanap.我需要一个地方打个盹。Isthatthewaytoopenthecan?那就是打开罐头的方法吗?重点词汇重点句式重点语法随堂练习二、动词不定式作状语

重点词汇重点句式重点语法随堂练习重点词汇重点句式重点语法随堂练习Ⅰ.单词拼写1.Keepyour

(肌肉)strongandithelpsyoutoavoidbackproblems.

答案:muscles2.Onlywhenagricultureisfullydevelopedcanindustryhave

(足够的)materialsandmarkets.

答案:sufficient3.Somethingmustbedonetochangeour

(当前的)examinationsystem.

答案:current重点词汇重点句式重点语法随堂练习重点词汇重点句式重点语法随堂练习Ⅱ.完成句子1.She