新教材2021学年英语高中人教必修第三册课件UNIT4SectionCDiscoveringUsef

-1-SectionCDiscoveringUsefulStructures&ListeningandTalking-2-SectionCDiscoveringUsefulStructures&ListeningandTalking自主预习学习理解随堂练习自主预习Ⅰ.知识体系图解重点词汇1.vt.回收利用;再利用2.n.肌肉;实力;影响力3.n.缺乏;短缺vt.没有;缺乏4.vi.浮动;漂流;漂浮vt.使浮动;使漂流5.adv.否则;要不然6.prep.在更远处;超出7.adj.当前的;现在的n.水流;电流;思潮8.adj.热衷的;渴望的recyclemusclelackfloatotherwisebeyondcurrentkeen-3-SectionCDiscoveringUsefulStructures&ListeningandTalking自主预习学习理解随堂练习自主预习9.solaradj.10.solarsystem11.sufficientadj.12.soapn.13.toweln.14.microwaven.(alsomicrowaveoven)15.tissuen.16.facilityn.太阳的;太阳能的太阳系;类太阳系足够的;充足的肥皂毛巾;抹布微波炉纸巾;(人、动植物细胞的)组织设施;设备-4-SectionCDiscoveringUsefulStructures&ListeningandTalking自主预习学习理解随堂练习自主预习重点短语1.figureout2.inorderto3.bedeterminedtodo4.getmarried5.dueto6.stayhealthy7.keepsthundercontrol8.achieveone’sgoal9.experimentwith10.giveup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-5-SectionCDiscoveringUsefulStructures&ListeningandTalking自主预习学习理解随堂练习自主预习重点句式1.Duringaspacewalk,astronautshavetomoveslowlysothattheycankeeptheirbodiesundercontrol.2....itwouldtakeovertwoyearstogettotheclosestplanet,Mars,andback.重点语法动词不定式作定语和状语-6-SectionCDiscoveringUsefulStructures&ListeningandTalking自主预习学习理解随堂练习自主预习Ⅱ.选词填空otherwise,recycle,lack,beyond,float1.Theytheirgarbagebecausetheycareabouttheenvironment.2.Theresearchsolidevidence,andtherefore,itsconclusionsaredoubtful.3.Canyoutellthepupilswhyshipsareabletoonthesea?4.Welostourwayinthatsmallvillage.wewouldhavevisitedmoreplacesofinterest.5.Ihaven’tseenSarasinceshewasalittlegirl,andshehaschangedrecognition.recyclelacksfloatOtherwisebeyond-7-SectionCDiscoveringUsefulStructures&ListeningandTalking自主预习学习理解随堂练习自主预习Ⅲ.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.totelltohavetogototraveltoget-8-SectionCDiscoveringUsefulStructures&ListeningandTalking自主预习学习理解随堂练习学习理解重点词汇1.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。-9-SectionCDiscoveringUsefulStructures&ListeningandTalking自主预习学习理解随堂练习学习理解【词汇拓展】lack(for)sth缺少某物(a)lackof缺少……for/throughlackof因缺少……belackingin在……方面缺乏Ifinditquiteboringtochatwiththosewhoarelackinginhumour.我发现和那些缺乏幽默感的人聊天很无聊。Moreandmorehighrisebuildingshavebeenbuiltinbigcitiesfor/throughlackofspace.由于缺乏空间,大城市中建造了越来越多的高层建筑。-10-SectionCDiscoveringUsefulStructures&ListeningandTalking自主预习学习理解随堂练习学习理解【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。-11-SectionCDiscoveringUsefulStructures&ListeningandTalking自主预习学习理解随堂练习学习理解-12-SectionCDiscoveringUsefulStructures&ListeningandTalking自主预习学习理解随堂练习学习理解-13-SectionCDiscoveringUsefulStructures&ListeningandTalking自主预习学习理解随堂练习学习理解2.Astronautshavetousetapetostickeverythingdownwhileworkinginspacebecauseeverythingwouldfloatoffotherwise.宇航员在太空工作时必须用胶带把所有的东西都粘住,不然的话一切都会飘走。【词汇精讲】句中otherwise是副词,意为“否则,要不然”。其用作副词,还有下列意义:①“另外;别样”,相当于differently或inanotherway;②“相反地”,相当于intheotherway或onthecontrary;③“在其他方面;除此之外”,相当于inotherordifferentways。otherwise还可用作连词,意思为“否则;要不然”,相当于or,orelse或ifnot。We’recommittedtotheproject.Wewouldn’tbehereotherwise.我们是全心全意投入这项工作的,否则我们就不会到这里来了。Youwillhavetogonow;otherwiseyou’llmissyourbus.你现在得走了,否则赶不上公交车了。-14-SectionCDiscoveringUsefulStructures&ListeningandTalking自主预习学习理解随堂练习学习理解【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,否则他现在就在工作了。-15-SectionCDiscoveringUsefulStructures&ListeningandTalking自主预习学习理解随堂练习学习理解-16-SectionCDiscoveringUsefulStructures&ListeningandTalking自主预习学习理解随堂练习学习理解3.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】beyond是介词,具体用法如下:(1)后接表示空间的名词,意思是“在……那一边,在……之外”。如:Heisfromavillagebeyondthemountain.他来自山那边的一个村庄。Theairportisaround30milesbeyondthecity.机场离城市大约30英里。-17-SectionCDiscoveringUsefulStructures&ListeningandTalking自主预习学习理解随堂练习学习理解(2)后接表示时间的名词,意为“迟于,晚于”。如:Don’tstaytherebeyondmidnight.不要过了午夜还待在那儿。Myfathercamehome30minutesbeyondtheusualtimethatevening.我的爸爸那天晚上回家比平时迟了30分钟。(3)在句中表示“超出(能力、范围等),为……所不能及”。如:Thebeautyofthesceneryisbeyondalldescription.这风景美得无法形容。I’msorryit’sbeyondmypowertomakeafinaldecisionontheproject.对不起,这项工程我无权做最终的决定。-18-SectionCDiscoveringUsefulStructures&ListeningandTalking自主预习学习理解随堂练习学习理解(4)常用于疑问句和否定句中,表示“除了……之外”。如:I’venothingelsetotellyoubeyondwhatyouhavealreadyknown.除了你已经知道的以外,我再也没有什么要告诉你的了。Ididn’tnoticeanythingelseatthepartybeyondhisfunnyclothes.我在聚会上没注意别的,只看到他那滑稽可笑的衣服。-19-SectionCDi