九年级英语：Unit 4 Inventions and Inventors复习课件（北师大版）.ppt

unit4inventionsandinventors 一 本周教学重点 1 复习被动语态2 情态动词表达怀疑 确定和可能 3 重点词汇 二 具体内容 一 被动语态 1 一般现在时被动语态基本结构 主语 am is are 过去分词thefoodisplacedintheoven theyareturnedintoheat 2 一般过去时被动语态基本结构 主语 was were 过去分词magicsquareswereinventedinchina papermakingwasintroducedintojapanin610 3 情态动词被动语态基本结构 主语 can should must be 过去分词schooluniformmustbewornatalltimes 4 一般将来时被动语态基本结构 主语 will be 过去分词itcan tbearadiobecauseit stoobigtobearadio thereportwill finish intwodays time milkshould keep inthefridge whiteclothesandcoloredclothesshouldnot wash together schooluniformsneedn t wear atalltimes 二 情态动词 当不是很确定时 用might或may might比may更不确定 whoknowswhatwillhappen youmayevenhavemarriedbythen itmightbeatoolforcuttingthings idon tknow 当确定某件事是唯一的可能时 用must itmustbesomesortoftoy 当确信不可能发生时 用cannot itcannotbearadiobecauseit stoobigtobearadio ex completethesentenceswithmightbe maybe cannotbe ormustbe 1 thisexam toodifficultforthestudents idon tthinktheycanfinishit 2 it abookforchildren therearemanycartoonsinit 3 it true ithinkyoumadeamistake 4 mr smith inlondon paris ortokyo nooneknowsforsure 5 that john heisinnewyorknow 6 didyouhearthedoorbell it nicholas iamexpectinghim 三 重点词汇 1 inmanybigcitiesintheworld theoveruseofcarsisthoughttobeoneofthemajorcausesofairpollution over 名词 形容词 表示 过多 过于 theover loadtruckcausedaseriousroadaccident shealwaysworksovertime soshehastoleaveherbabycaredforbyhermother bethoughttobe被认为 被看作sheisthoughttobethetopstudentinourclass janeisthoughttobebusypreparingfortheexam 2 howeverwearealsowarnednottoaskforprettycolors becausethecarwillcomeingrayonly warnnoonewarnedhimofthedanger iwarnedhernottogetclosetothedogbutshewouldn thearofit 3 otherexpertsaresurethatthefuturewillbehappy besurethat iamsurethatsmokingwillhurtyou areyousurethatjohnwillcomethisafternoon 4 ifgasisinshortsupply thesupercarwillrunonwater beinshort thecheaperitis thebetter i mshortofmoney on靠hefindsitdifficulttoliveonhissalary theylivemostlyonvegetablesfromtheirgarden 5 asarule softfruitslikestrawberries etc aredifficulttofreeze asarule一般来说 通常是asarule shegoesoutearlyeveryeveninglookingforwork asarule wegethomeat6 6 yeout开花 出版 退色 计算出来thismagazinecomesoutmonthly someflowershavebeguntocomeout iwashedtheshirttwicebuttheinkstillhasn tcomeout 7 observe观察iobservedaletteronthetable didyouobserveanythingstrangeinthatboy sbehavior exercise 课堂练习 i 单选 1 haveyoueverthiskindofmooncakes a eatb eatsc eatingd eaten2 theknivesareusedcuttingthings a inb toc ford of3 theyareusedforthestyleofashoe a changeb changesc changingd changed 4 mustistayathome mum no you a needn tb mustn tc don td maynot5 sheaskedthemthingsabout a nottolitterb don tlitterc notlitterd nolitter6 i mnotsurehewillcomebackhometomorrowornot a whenb whatc whetherd where 7 look thesebedinosaureggsbecausetheyarethebiggestofall a mustb canc shouldd may8 iwastoldtotakeumbrellawithme oh no lookatthesky it ssunnyandrain a mustb can tc mayd needn t9 thelightintheofficeisoff theteacherbetherenow a mayb can tc mustn td must ii 完成句子 1 警察阻止孩子们在街上玩耍 thepolicemanstoppedthechildreninthestreet 2 去年他去日本学医 lastyear hewenttojapan 3 她每天早起以便能读英语