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高中英语必修三第二单元重点、难点UnitTwoHealthyeating1、Doyoueatahealthydiet?你吃的健康吗？diet日常饮食Abalanceddietisnecessaryforgoodhealth.平衡的饮食对身体健康很有必要。Chinesedietishighinfiber.中餐富含纤维。易混辨析：diet和fooddiet既可指习惯上吃的食物，又可指规定的食物。特指维持健康的食物。food是一般用语，指进入身体供人或动物生长的食物。强调种类时为复数名词。联想扩展：goonadiet=beonadiet节食Youpleasehavelunchyourself,Iamonadiet.你自己吃午饭，我在节食。2、Bynowhisrestaurantoughttobefullofpeople.到这个时候他饭店宾客盈门的。oughtto用法归纳：（1）（按理）应该Heoughttobeherebynow.他这会儿应该到了。ItoughttobeverycoldinDecemberinXi’an.西安12月应该很冷了。（2）（建议）应该Yououghttostudyhard.你应该努力学习。Schoolsoughttosupplygoodbooksforstudents.学校应该为学生提供好书。（3）oughttohavedone=shouldhavedone过去应该做而未做Yououghttohavestudiedhardinthepastthreeyears.过去三年你应该好好学习来着。即时活用：1、---Thereisalotofsmokecomingoutoftheteachingbuilding.---Really?It_____beafire,mostprobably.A.canB.oughttoC.havetoD.must2、____theoldbuildingstillstandthereaftersomanyyears?A.MustB.MayC.CanD.Oughtto答案：BC3、Hethoughtofhismutton,beefandbaconcookedinthehottest,finestoil.他想到了他用最热的，最好的油烹制出的羊肉、牛排和熏肉。thinkof用法归纳：（1）想起；记起Sorry,Ididn’tthinkofyournamejustnow.对不起，我刚才没想起你的名字。Weshouldthinkofsomeexcuses.我们应该找一些借口。（2）考虑Weshouldthinkofthemattercarefully.我们应该认真考虑这个问题。PleasethinkofwhatIhavesaid.考虑一下我所说的。（3）为…着想ChenGuangbiaoisalwaysthinkingofthepoorpeopleinthepoorareas.陈光标总是想着贫穷地区的穷人。Don’ttrusthim,heonlythinksofhimself.别相信他，他只为自己着想。（4）想；打算Iamthinkingofgivingupsmoking.我打算戒烟。Isthereanyonethinkingofgoingouttoplaybasketballwithme?有人想和我出去打篮球吗？联想扩展：thinkabout想；考虑thinkmuchof对…评价很高thinkhighly/wellof高度评价thinkbadly/littleof认为不好thinknothingof觉得不怎么样thinkout想出；想清楚thinkover仔细考虑即时活用：–Howlonghaveyouworkedinthislibrary?---Twoyears,butI’mthinking________.A.tostopB.ofstopC.tostoppingD.ofstopping答案：D4、SomethingterriblemusthavehappenedifLiChangwasnotcomingtoeatinhisrestaurantashealwaysdid.如果李昌不像平常那样来他的饭店吃饭肯定是发生了什么可怕的事情。情态动词表示猜测情态动词、表示意义及猜测的概率：must一定；肯定100%may可能50%-60%might也许20%-30%should按理应该can/could可能特别提示：must,may,might,should用于肯定猜测；can/could用于否定和疑问猜测。用法归纳：（1）表示对现在情况的猜测，用“情态动词+动词原形”Hemustbeintheclassroom.他一定在教室。Shemayhaveasparepen.她也许有一支多余的钢笔。（2）表示对过去情况的猜测，用“情态动词+have+过去分词”Thegroundiswet,itmighthaverainedlastnight.地是湿的，昨晚可能下雨了。Theymusthavefinishedtheirhomework.他们一定把作业做完了。特别提示：注意情态动词表示猜测句的反义疑问句。（1）表示对现在情况的猜测的句子，不能用情态动词反问。（2）表示对过去情况的猜测的句子，如果句子中有表示过去的时间，用过去式反问；如果句子中没有表示过去的时间，用完成时反问。Hemustbeintheclassroom，isn’the?他一定在教室,是吗？Shemayhaveasparepen,doesn’tshe?她也许有一支多余的钢笔，是吗？Thegroundiswet,itmighthaverainedlastnight,didn’tit?地是湿的，昨晚可能下雨了，是吗？Theymusthavefinishedtheirhomework,haven’tthey?他们一定把作业做完了，是吗？should表示“按理应该”。看下面一道高考题---WhenshallIcomeforthephotos?Ineedthemthisafternoon.---They______bereadyby12.A.mustB.canC.shouldD.can答案：Ccan/could用于疑问句表示“可能…吗”；用于否定句表示“不可能”。---Look,someoneiscoming,whocanitbe?看，有人来了，可能是谁呢？---Itmustbetheheadmaster.肯定是校长。---Itcan’tbehim.HehasgonetoXi’an.不可能是他，他去西安了。即时活用：1、He______withoutsayinggoodbyetothem,forhealwayshasgoodmanners.A.mustn’thaveleftB.maynotleaveC.shouldn’thaveleftD.can’thaveleft2、Theclassroomwasempty.Ithinkthey_____totheplaygroundtodomorningexercises.A.musthavegoneB.oughttohavegoneC.shouldhavedoneD.canhavedone3、---Weweren’tsurewhichwaytogo.Intheendweturnedright.---You______thewrongway.You______left.A.hadgone;musthaveturnedB.went;mustturnC.havegone;wouldhaveturnedD.went;shouldhaveturned4、Youmusthavebeencaughtintherainyesterday,______you?A.mustn’tB.haven’tC.didn’tD.weren’t5、WhenIsuggestedthatsomeoneinthevillage____hiswine,hedidn’tbelieve.A.musthavedrunkB.shoulddrinkC.havedrunkD.hasdrunk6、Hemustbethepersonwhohasbeenlateathirdtimethisweek,________?A.isn’theB.hasn’theC.mustn’theD.musthe7、–IsBushoverhiscoldyet?---He________.Hewentice-skatingyesterday.A.mustbeB.oughttoC.willbeD.hasto8、–Hasyourbrothergotup?---Sorry,I’mnotsure.He________gotup.A.musthaveB.can’thaveC.wouldhaveD.mighthave答案：DADCAAAD5、Tiredofallthatfat?Wanttoloseweight?肥腻的东西吃厌了吗？想变瘦吗？betiredof…对…厌倦；厌烦IamtiredoflearningEnglish.我烦学英语。Wearetiredofthesamebreakfasteverymorning.我们厌烦每天早上吃同样的早餐。易混辨析：betiredof…对…厌倦；厌烦betiredfrom/with…由于…而疲惫Wearetiredfromthelongrunning.由于长跑我们很累。特别提示：这里tiredof为形容词短语，在句中作状语。形容词作状语时，多放在句首或句末。在句中作原因状语、条件状语或伴随状语。Thirsty,herushedtothewell.由于很渴，他朝井边跑过去。Theoldmanwaslyingontheground,dead.那个老人躺在地上，死了。loseweight减肥Manyyounggirlsaregoingonadiettoloseweight.许多年轻的女孩节食想减肥。联想扩展：putonweight增肥；长胖Youshouldeatless,youcan’tputonmoreweight.你应该少吃点，你不敢再长胖了。6、CuriositydroveWangPenginside.好奇心驱使王鹏走进去。drivevt.迫使;逼迫用法归纳：（1）drivesb.todosth.Whatdroveyoutochangeyourmind?什么使你改变注意的？Hungerdrovethemtoselltheirchildren.饥饿使得他们卖掉孩子。（2）drivesb.to+n./doingPovertydrovethemtostealing.贫穷使得他们偷窃。Troublesdrovehimtoalcohol.烦恼使得他借酒消愁。（3）drive+O+介词短语WeatlastdrovetheJapaneseinvadersoutofChina.我们最终把日本侵略者赶出了中国。Oppressiondrovethemintoopenrebellion.压迫使得他们反叛。7、HecouldnothaveYongHuigettingawaywithtellingpeoplelies!他可不能让雍慧哄骗人们后跑掉。have+O+OC让发生某情况用法归纳：（1）havesb.dosth.让某人做某事Don’tforgettohavehimcometogetherwithyou.别忘了让他和你一起来。IwillhaveLiMeitypetheletter.我要让李梅打这封信。（2）havesb./sth.doing让某人做某事；让某情况发生Oilcanhavecarsrunning.油能使车运行。Ifyouarelateagain,Iwillhaveyoustandingatthebackoftheclassroomforaperiod.如果你再迟到，我就让你在教室后面站一节课。（2）havesb./sth.doneA.让别人做某事Weshouldha