外研版（2019） 必修第二册 Unit 1 Food for Thought Using language课件

B2U1FoodforthoughtGrammar:Modals(1)Whattypeofverbistheoneinboldineachofthefollowingsentences?YuanLongpingworkedallhislifeontheresearchofhybridrice.YuanLongpingwillliveintheheartsoftheChinesepeopleforever.YuanLongpingistheprideoftheChinesepeople.WecanneverpraiseYuangLongping’scontributionstoomuch.Typesofverbsactionverbhelpingverb(linkingverb)(modalverb)动词分类：行为动词：系动词：助动词：情态动词：可独立作谓语，分为vt.和vi.需接表语不单独做谓语，构成时态和语态？Modals(情态动词)表达情感、态度、语气。need;dare(dared);hadbetter;beableto;haveto;can(could);may(might);must;will(would);shall(should);oughtto;usedto,etc.后接动词原形，适用于各种人称和数（haveto除外）。I/You/We/He/Theymust/can/should/mayworkhard.具有词义，不单独做谓语，可构成简略答案。--Ican’tswim.Canyouswim?--No,Ican’t.Activity2:Underlinethemodalsinanintroductiontoanappandtalkabout

theirmeanings.

havetheabilitytodosth.beafraidofsth.benecessaryorgivestrongadvicetodosth.notbenecessarytodosth.giveadvicetodoornottodosth.Activity3:Completethetipsforgoodtablemannerswiththecorrect

formofthemodalsinActivity1.

havetodarenothadbetterneedn’tbeabletoUsemodalstointroducetablemannersinChina.Youhavetowaituntiltheeldersstarttoeat.You’dbetternotstickyourchopsticksintotherice.You’dbetternotmaketoomuchnoisewhilechewing.IwillbeabletospeakJapaneseinanotherfewmonths.

再过几个月，我就能讲日语了。Theywereabletoescapefromthebuildingwhenthefirebrokeout.

火灾发生时，他们设法从那栋建筑里逃了出去。1.beableto“能够”用于过去时态时，可表示“某人过去成功做了某事”。1.beableto“能够”

Shecan

singEnglishsongswell.HewillbeabletosingthissonginEnglishinafewmonths,too.Ifhegothereafewhoursearlier,Icould

savehim.Luckily,hewasabletoescapefromthebigfireintheend.=Luckily,hemanagedtoescapefromthebigfireintheend.=Luckily,hesucceededinescapingfromthebigfireintheend.canbeabletoSentences1&2强调_____________的能力强调_______________的能力Sentences3&4强调一种______(可能/结果)强调一种______(可能/结果)Tense通过努力而获得结果可能两种时态(can/could)各种时态自身已具有2.hadbetter“最好”1.你最好坐在这儿休息一下。You’dbetter

sithereandhavearest.2.她最好再也别撒谎了。

She

hadbetternot

tellliesanymore.3.医生是不是去看看他比较好。

Hadn’t

thedoctorbetterseehim?3.haveto“不得不”

Completethefollowingsentences.Therewasnobusthere.We_________takeataxi.Ithinkwe______takeataxi,orwewillbelate.

I______passseafoodforI’mallergictoit.译：你非得把音乐放那么响吗？Doyouhavetoplaythatmusicsoloud?hadtomusthavetohaveto强调客观原因，而must表示主观看法。haveto第三人称单数hasto，过去式hadto，疑问句和否定句中需借助助动词。4.need“需要”做情态动词：不用于肯定句，可用于否定句、疑问句。没有时态、人称和数的变化。翻译：你不必今天做完这项工作，还剩下很多时间。Youneedn’tfinishthatworktoday.There’splentyoftimeleft.我需要再讲一遍吗？

NeedIexplainitagain?4.need“需要”做实义动词：有时态、人称和数的变化，不受句型限制。肯定句中需用needtodo。否定句和疑问句需借助助动词。翻译：他病得很重，需要药物治疗。He'sverysick.Heneedsmedication.任何人都可使用这个游泳池，不必是会员。Anybodycanusethepool—youdon'tneedtobeamember.5.dare“敢”做情态动词：不用于肯定句，可用于否定句、疑问句和条件从句中。过去式为dared。翻译：你敢来就试试。Tryitifyoudare

comehere.她对任何人都只字不敢提及此事。Shedarednotbreatheawordofittoanybody.她还敢冒险待在原来的地方吗？

Daresheriskstayingwhereshewas?Idioms1.Idaresay…我想，大概;我敢说2.Howdareyou-你竟敢(usedtoshowyouareangry)5.dare“敢”做实义动词：有时态、人称、数的变化；肯定句中用daretodo；疑问句和否定句需借助助动词，且to可省。Doyoudare(to)do?Idon’tdare(to)do.翻译：敌人胆敢来犯，我们就把它消灭。We'llwipeoutanyenemythatdarestoinvadeourterritory.多数人都讨厌他，但他们不敢说出来。Mostpeoplehatehimbuttheydon’tdare(to)sayso.《课时学案》P.9练习willbeabletowereabletodaredidn’tdareneedn’tneededto/hadtoneededto/hadtohadbetter《课时学案》P.9练习Darehetellhismotherthebadnews?Doeshedare(to)tellhismotherthebadnews?I’veorderedsomepizza,soweneedn’tworryaboutcookingwhenwegethometired.I’veorderedsomepizza,sowedon’tneedtoworryaboutcookingwhenwegethometired.《课时学案》P.9练习She’dbetternot