九年级英语全册 Unit 12 Life is full of the unexpected Section A（Grammar Focus4c）课件 （新版）人教新目标版.ppt

unit12 sectionagrammarfocus 4c lifeisfulloftheunexpected lookatthefollowingpicturesandtalkaboutwhatyouusuallydointhemorning iamwakenupbytheclock then ibrushmyteeth stillsleepy next ihavebreakfast itakemyschoolbagandleavehome icometothebusstationandwaitfortheschoolbus intheend iarriveatschool 结构 had 动词的过去分词 用法 1 表示过去某一时间或动作之前已经发生或完成的动作或存在的状态 句中常用by before when until等词引导时间状语 它是以过去某一时间为起点 所以过去完成时是一个相对的时态 表示的是 过去的过去 mostoftheguestshadleftwhenhearrivedattheparty 当他到达晚会时 他发现大多数客人已经离开了 2 过去完成时还可表示过去某一时刻之前发生的动作或状态持续到过去某个时间或持续下去 常与for since等词连用 whenjackarrived maryhadbeenawayforalmostanhour 当杰克到时 玛丽已经离开快一个小时了 bythetime的用法 bythetime意为 到 时候 为止 1 如果从句中的谓语动词是一般过去式 那么主句的谓语动词通常用过去完成时 表示 截止到从句动作发生时 主句动作已经完成 即过去的过去 bythetimeyoucameback ihadfinishedthisbook 你回来时我已经把这本书看完了 从句谓语动词cameback为一般过去时 所以主句动作用过去完成时hadfinished 表示过去的过去 2 如果从句中的谓语动词为一般现在时或现在完成时 那么从句中的谓语动词常用将来完成时 表示 截止到将来的某一时刻为止 主句动作将已完成 bythetimeigethome theywillhaveleft 我到家时他们将已经离开 bythetimeigraduatenextyear iwillhavelivedhereforfiveyears 到明年毕业时 我将已经在这待了五年了 1 timwentintothebathroom marygotup bythetimemarygotup timhadalreadygoneintothebathroom 4amakesentencesusingbythetimeorbefore 2 thecoffeebecamecold iputcreaminthecoffee beforethecoffeebecomecold ihadputcreamintheit 3 theteachercollectedthemathhomework igottoschool bythetimeigottoschool theteacherhadcollectedthemathhomework 4 icompletedtheworkformyboss theworkdayended beforetheworkdayended ihadcompletedtheworkformyboss 5 themoviestarted iarrivedatthecinema bythetimeiarrived themoviehadstarted 6 mymotherfinishedmakingtheapplepie igothomefrommylanguagecourse bythetimeigothome mymotherhadfinishedmakingtheapplepie bythetimeiarrivedattheparty everyoneelse already 2 whenheputthenoodlesintoabowl herealizedhe toaddthegreenbeans 4bfillintheblankswiththecorrectformsofthewordsinthebox rushoutforgetarriveatgointoshowupfindout had shownup hadforgotten bythetimemymothercamebackfromthemarket i already ofthedoortogotomypianolesson 4 beforeshegottotheairport she abouttheearthquake 5 whenshe themovietheater sherememberedshehadforgottentofeedherdog 6 beforeshegotachancetosaygoodbye he thebuilding rushedout hadforgotten arrivedat hadgoneinto had 4cwritetwotruestatementsandonefalsestatementaboutyourdayyesterday thenaskyourclassmatestoguessthefalsestatement 1 bythetimeileftforschoolinthemorning ihadalreadyhadbreakfast ihadalreadyhadsupper ihadalreadyhadmyhaircut 2 bytheendoftheschoolday 3 bydinnertime ihavegotapresentfromtom ihadhadthesearticlesread ihadfinishedmyhomework ihadhadtoomanyapples ihadeatenplentyofmeat ihavehadallthehouseworkfinished 1 根据汉语意思完成句子 1 当我到达学校的时候 我才意识到我把书包忘在家里了 igottoschool irealizedthati mybackpackathome 2 到我返回学校的时候 铃声已经响过了 igotbacktoschool thebell when had left bythetime hadrung 3 就在我和别的工作人员一起排队等候的时候 听到了一个巨大的声响 asi withtheotherofficeworkers i 4 我到达公共汽车站之前 汽车已经离开了 beforei thebusstop thebus 5 我决定先买一杯咖啡 然后再去办公室 i gouptomyofficewhenidecidedtogetacoffeefirst gotto had alreadyleft wasaboutto waswaitinginline heardaloudsound 2 用所给词的适当形式填空 1 whenigottherethebus go 2 bythetimeigottoclass theteacher start teaching 3 we learn over1 000wordsbytheendoflastterm 4 i clean theroombefo