七年级英语下册 Module 3 Natural elements Unit 6 Electricity（第3课时）课件 （新版）牛津深圳版.ppt

unit6electricity 第3课时grammar module3naturalelements 广东学导练七年级下册配上海教育版 选择填空 1 mum ivisitthemodernartmuseumnextmonday i mafraidyoucan t allthemuseumsinthiscityareclosedonmonday 2016广东 a wouldb needc shouldd may 2 isthatboytom it betom hehasgonetohishometowntovisithisgrandparents 2016铜仁 a canb can tc mustd mustn t d b 3 whatwilltheweatherbeliketomorrow it berainy cloudyorsunny whoknows 2016鄂州 a mustb mightc shouldd can t 4 musticleantheroomnow mum no 2016邵阳 a youmustn tb youneedn tc youcan t 5 excuseme itakethemagazineoutofthereadingroom sorry youcan t justhere please 2016淮安 a mustb wouldc mayd need b b c 情态动词can may must的用法1 can的用法 1 表示能力 一般译为 能 会 即有某种能力 如 shecandrive butican t 她会开车 但我不会 2 表示许可 常用在口语中 相当于may 如 caniuseyourmobilephone 我可以用你的手机吗 3 表示推测 意为 可能 常用于否定句和疑问句中 此时can t译为 不可能 如 canitbemary 会是玛丽吗 no itcan tbeher shehasgonetoshanghaionbusiness 不可能是她 她去上海出差了 4 could是can的过去式 意为 能 会 表示过去的能力 如 hecouldplaythepianowhenhewas5 当他5岁时 就会弹钢琴了 5 在表示请求许可时 can could没有时态区别 只是could在语气上更加委婉客气 如 couldiuseyourdictionary 我可以用你的字典吗 yes youcan 可以 2 may的用法 1 表示请求 许可 如 mayiborrowyourbike 我可以借你的自行车吗 2 表示推测 谈论可能性 意为 可能 或许 一般用于肯定句中 如 itmayraintomorrow 明天可能会下雨 3 may的过去式为might 表示推测时两者无时态区别 不过might的可能性低于may 如 hemightbesick 他可能是生病了 4 表示希望 祈求 祝愿时 may常译为 祝愿 通常结构为 may 主语 动词原形 其他 如 mayyouhaveagoodtime 祝你玩得开心 3 must的用法 1 must意为 必须 一定 如 mustihandinmyhomeworktoday 我今天必须交作业吗 2 must的否定形式mustn t意为 一定不要 千万别 或 禁止 不许 如 youmustn tmakenoiseinthelibrary 你一定不要在图书馆吵闹 3 对must引导的疑问句 肯定回答用must 否定回答用needn t或don thaveto 如 mustireturnthebooktohimtoday 我今天必须把书还给他吗 yes youmust no youneedn t don thaveto 是的 必须要还 不 你不必 4 must可以表示很有把握的推测 意为 一定会 肯定会 只用于肯定句中 如 hewontheprizeintheenglishcompetition hisenglishmustbeverygood 他在英语竞赛中获奖了 他的英语一定很好 一 用can can t may must mustn t填空1 what idoforyou iwantsomebananas 2 tom rideabike buthecandriveacar 3 youareill tom you seeadoctor 4 children playbasketballinthestreet 5 ifyouarenotcareful acar hityou 6 icomein yes youmay comein please 7 ablindman seeanything can can t must mustn t may may can t 二 按要求完成下列句子1 mayigotoplayfootballwithmyfriends dad 作否定回答 no 2 daisycanrepairthemachine 改为否定句 daisy repairthemachine 3 youmustdothingslikehim 改为否定句 you thingslikehim you may not can t can t mustn t do 三 语法填空newenergyinthetwenty firstcenturyenergyfromthewindwindis1 kindofcleanenergy andthere2 be lotsofit but 3 there snowind thereisnowindenergy energyfromthewaterwhenwatermoves4 ahighplacetoalower 较低的 place itcanmakeelectricitywithout5 pollute however peoplehavetobuilddams 水坝 6 use thisenergy andbuildingdamsisvery7 expensively a is if through pollution touse expensive energyfromthesunsolarpanels 太阳能电池板 ontheroofs 屋顶 ofhousescanturnenergyfromthesuninto8 electric solarpoweriscleanandplentiful 丰富的 9 whentheweatherisbad it10 notwork electricity but doesn twork 一 选择填空 1 ifinishtheworknow no you youcanfinishittomorrow a may mustn tb must needn tc can mustn t 2 doihavetocomebacktomorrow yes you a canb mayc must 3 ihavetopractisemyoralenglisheverydaybecausei speakenglishwell a maynotb shouldn tc can t b c c 4 icomein sir ofcourse youcan a mustb mayc will 5 idon tknowwhathedoes doyouknow iguesshe beadoctor a canb mayc must 6 theflowerslook iwillbuysome a niceb nicelyc bad 7 askthepolicemanoverthere he knowthewaytothesciencemuseum a hastob couldc may b b a c 8 john youneedn tworktoday you doittomorrowifyouaretired a mustb mayc can t 9 who sthatwomanwithann i mnotsure it behermother a mustb canc may 10 manypeoplelikejaychoubecausehe writebeautifulmusic a canb mayc must 11 mum iplayfootballthisafternoon sure butyou finishyourhomeworkfirst a may couldb can mustc may can t b c a b 12 ismrbrowndrivinghere i mnotsure he comebytrain a mayb shallc need 13 manypeopleplaywithmobilephonesalldayinsteadofreadingbooks that stoobad everyone beabooklover readingismoreenjoyable a mayb shouldc would 14 whereareyougoingthismonth we gotoxiamen butwe renotsure a needn tb mightc must a b b 15 pleasebequiet ourteacheriscoming it beourteacher shehasgonetobeijing a mustb mayc can t二 选词填空cancan tmustmustn tmay1 mary speakthreelanguages 2 ismokeinthisroom 3 yousucceed 4 you retom sgoodfriend soyou knowwhathelikesbest 5 i liftthebox itistooheavyforme c can can may may must can t 6 everythingiscleanandtidy someone havecleanedmyroom 7 he cometomorrow butiamnotsure 8 you playwithfire itisdangerous 9 itbetrue no it betrue 10 you gooutaloneatnight 三 语法填空electricitymakesourlives1 easy thanbefore weusealotofelectricalappliances2 ourhouseseveryday here3 be threeofthem howcanweusethem4 safe must may mustn t can can t mustn t easier in are safely whenweusethericecooker weshouldkeeptheoutsideofthepotdry donotswitchthericecookeron5 thepotisempty whenweusethewashingmachine weshouldnotputourhandinitwhenitis6 whenwearenotusi