九年级英语全册《Unit 15 We’re trying to save the manatees!Section A 1》课件 人教新目标版.ppt

新目标九年级unit15 unit15we retryingtosavethemanatees howmanykindsofanimalscanyouthinkof 2 canyouseethemaroundus why warmingup animalsareman sfriends what sthis andhowtodescribeit enormous gray what sthis andhowtodescribeit noisy clever what sthis andhowtodescribeit playful what sthis andhowtodescribeit gentle shy what sthis andhowtodescribeit playful what sthis andhowtodescribeit aggressive funny 1blistening gentlefurryenormousplayfulnoisyshyaggressivegrayfastspotted iamlikethisanimalbecauseiamstrongandintelligent ilikewaterandiliketoeatvegetables you relikeanelephant no you relikeamanatee yes iamlikethisanimalbecauseiamlovelyandplayful iliketoeatbamboo you relikeapanda yes 2alistening listenandcompletethechart 2b 2500intheu s thewaterunderthetreesinmangroveswamps swampsbeingpolluted notenoughfood 10feetlong large 1000poundsheavy pairwork a howbigaremanatees b they reabout10feetlongandtheyweighabout1 000pounds a wheredotheylive b theirfavoritehabitatisthewaterunderthetreesinmangroveswamps a whyaretheyendangered b someoftheswampshavebecomepolluted also theresometimesisn tenoughfoodforallofthem explanation 1 iamlikethisanimalbecauseiamstrongandintelligent belike looklike besimilarto像 看起来像 如 heislikehisfather 他像他的父亲 helookslikehisfather heissimilartohisfather 这里的like作介词 意思为 像 like还可做动词用 表示 喜欢 like doing sth 喜欢做某事 如 helikeshisfatherverymuch 他很喜欢他的父亲 marylikesplayingvolleyball 玛丽喜欢打排球 2 howbigaremanatees 海牛有多大 howbig 询问体重 以how组合的疑问词组有很多 如 howold询问年龄howoften询问频率howlong询问动作持续的长短howmuch询问质量或者价钱howfar询问距离howmany询问数量howsoon询问过多久 3 theyweighabout1 000pounds 他们大约重1000磅 weigh称 重量 测 重量 如 heweighedthestoneinhishand 他用手掂了掂这块石头的重量 thepieceofmeatweighsfourpounds 这块肉重四磅 weight还可用做名词 重量 如 whatisyourweight 你的体重是多少 4 we retryingtosavethemanatees 我们正在竭尽全力拯救海牛 trytodo tryone sbesttodo努力去做某事 如 everystudentshouldtrytostudyhardinordertostudyinauniversity 为了进入大学学习 每个学生都应该努力学习 grammar do does did be am is are doing have hasdone was weredone have hasbeendone 定义 现在完成时表示到目前为止已经完成 并对现在留下某种后果和影响的动作 1 表示过去发生的某一动作对现在造成的影响或结果 常与一些时间状语 现在完成时 have has 动词的过去分词 如 already yet ever never just before once twice等连用 也可以和包括现在在内的时间状语 如thesedays today thisyear sofar等连用 2 表示过去发生的动作或存在的状态 一直持续到现在 也许还将继续下去 可以和表示从过去某一时刻延续到现在的一段时间的状语连用 即for 时间段 since 时间点 从句 inthelasttenyears等 谓语只可用延续性动词 2 has havebeento去过某地表示某人的一种经历 可与once twice already ever never等连用 have hasgoneto去某地了 说话时某人已离开此地 在去某地的途中或已在某地 have hasbeenin逗留在某地 已经一段时间 常和fortendays sinceicamehere等连用 1 whereisjim he wuhan 2 myparents thegreatwalltwice theylikethereverymuch 3 youever tothehappyvalley 4 howlong peter thewesthillfarm havebeento have beento has beenin hasgoneto 5 mysister theshop shewillbebackintwohours 6 she shanghai sheisn there 7 she shanghai sheishere 8 she shanghaifortwoyears hasgoneto hasgoneto hasbeento hasbeenin 3 already yet已经用于肯定句 用于否定句 疑问句 1 shehasnotseenthisfilm shehas seenthisfilm 2 ihave combedmyhair haveyoucombedyourhair 3 hehas watchedavideo hehasnotwatchedavideo already already already yet yet yet 4 现在完成时中延续性动词和终止性动词 英语动词根据词义可分为两种 一种是延续性的 一种是终止性的 终止性动词 也可称为非延续性动词 瞬间动词 或点动词 如 become begin buy borrow arrive die finish gettoknow go join marry start stop等 表示动作的发生与结束于一瞬间完成 不能再延续 所以它的现在完成时不能和表示延续的时间状语连用 即不能与表示一段时间的状语 for 时间段 since 时间点 从句连用 也不能用在howlong引导的特殊疑问句 初中英语课本中常见终止性动词有 leave go come arrive begin buy borrow die join become等 终止性动词要表示持续时 可用以下方法 将时间状语改为时间段 ago 句中谓语动词用一般过去时 eg 我弟弟参军两年了 mybrotherjoinedthearmytwoyearsago 若保留for 时间段 since 时间点 从句 或用在howlong句型中 则需将终止性动词改为相应的状态动词或延续性动词 come go arrive get reach move bein atopen beopendie bedeadclose beclosedbecome beborrow keepputon wearbuy have 常见终止性动词与延续性动词 或状态动词 的对应关系如下 leave beaway from begin start beonfallasleep beasleepend finish beovercatchacold haveacold jointhearmy beinthearmybeasoldierjointheparty beinthepartybeapartymember 1 吉姆买了这只钢笔两年了 jimhashadthispenfortwoyears jimhashadthispensincetwoyearsago jimhashadthispensince2003 itistwoyearssincejimboughtthispen ithasbeentwoyearssincejimboughtthispen jimboughtthispentwoyearsago 2 李雷自从2003年就参军 3 那部电影开始30分钟了 4 自从两年前这家商店就开了 5 那个老人已经死了五年了 6 莉莉六年前就离开家了 现在完成时和一般过去时的区别 现在完成时所表明的是过去发生的动作对现在的影响 强调的是现在的情况 不可以和表示过去的时间状语yesterday in1991 threedaysagolasttime lastnight等连用 一般过去时表明的是过去发生的事实 和现在不发生关系 5 现在完成时中的for与sincefor 时间段与延续性动词的现在完成时连用since 时间点 从句 ihavekeptthelibrarybookforaweek ihavekeptthelibrarybooksinceaweekago itis hasbeen 一段时间 since 自从某事发生已有一段时间了 eg itis hasbeentwoyearssincemybrotherjoinedthearmy 注意 1 since引导的从句中动词用过去时 2 when引导的特殊问句不与现在完成时连用 3 havegot hasgot虽然是现在完成时 但havegot havehasgot has 1 it salongtimesincewe meet lasttime isn tit 2 iknowyou choose apicturebookamongthese yes havealookatit please 3 sofar spaceshipswithoutpeople reach themoonandsomeotherpartsoftheuniverse met havechosen havereached 4 myfather homefornearlythreeweeks a hasgoneawayfromb hasleftc hasbeenawayfromd wentaway 5 mrandmrsgreenhave inchinaforaweek a beenb gotc arrivedd reached 近义句转换 1 jackjoinedtheleaguefivemonthsago jack aleaguememberfivemonthsago 2 it salongtimesincewemetlast we eachotherforalongtimesincewemetlasttime hasbeen haven t seen fillintheblankswiththerightformsofthegivenwords 1 everydaymymother get upearly 2 thedinosaureggs discover manyyearsagobyscientists 3 listen somechildren sing anenglishsongoverthere gets werediscovered aresinging 4 inourhometownthereusedto be manyoldtrees 5 mywork notfinish yet ican tgoouttoplaywithyou be hasn tbeenfinished 运用 根据括号中所给动词 用其正确时态填空 1 frank help hismotherwiththehouseworkonsundays 2 i become amiddleschoolstudentthree