九年级英语全册 Unit 13 Were trying to save the earth Section A（3a4c）课件 （新版）人教新目标版.ppt

unit13wearetryingtosavetheearth sectiona sharkn 鲨鱼 finn 鱼 鳍 crueladj 残酷的 harmfuladj 有害的 readthepassageaboutsharksandcompletethefactsheetbelow southernchina 70million over90percent wildaidandthewwf readthepassageagainandfillintheblankswiththewordsinthebox soalthoughifbutwhen manypeopledonotrealizetheyarekillingawholeshark theyenjoyabowlofsharkfinsoup 2 sharksareatthetopofthefoodchain iftheirnumbersdrop theocean secosystemwillbeindanger when so 3 manythinkthatsharksaretoostrongtobeendangered theyarewrong 4 therearenoscientificstudiestosupportthis alotofpeoplebelievethatsharkfinsaregoodforhealth 5 sharksmaydisappearoneday wedonotdosomethingtostopthesaleofsharkfins but although if languagepoints 1 savethesharks save作动词 意为 救 拯救 后常跟介词from例句 hesavedthrgirlformthebigfire 他从大火中就出了那个女孩 thedogsavedtheboy slife 那只狗救了男孩的命 languagepoints 1 save作及物动词 意为 储蓄 贮存 节省 例句 shesavedherstrengthforthelastminutesoftherace 他保存体力 准备在比赛的最后几分钟冲刺 2 save作不及物动词 意为 节省 存钱 贮存物品 例句 someanimalssaveforthefuture 一些动物为未来之需储存食品 拓展 languagepoints 2 whenpeoplecatchsharks theycutofftheirfinsandthrowthesharkbackintotheocean cutoff有以下几种意思 1 切断 水 电 中断 关掉例句 theirwatersupplywascutoff 2 切下来 剪下来例句 theycutofftheheadsoftheircaptives 他们把俘虏的头砍了下来 languagepoints 3 孤立例句 theenemysoldierswerecutofffromtheirheadquaters 敌军同总部的联系被切断 成了孤军 thefloodcutoffthevillagesfromtherestoftheworld 洪水切断了村民们与外界的联系 4 剥夺继承权例句 hehascuthissonoffwithoutapenny 他取消了儿子的继承权 一便士也不给 languagepoints 3 asharkcannolongerswimandslowlydies 鲨鱼不能再游泳然后慢慢死掉 nolonger意思是 不再 例句 i mnolongerastudent 我不再是个学生了 有两个短语和nolonger同义 即not anylonger和not anymore 但他们侧重的方面不同 languagepoints 4 thismethodisnotonlycruel butalsoharmfultotheenvironment 这种方法不但残忍而且对环境有害 1 notonly butalso 用于连接两个表示并列关系的成分 着重强调后者 其意为 不仅 而且 其中的also有时可以省略 languagepoints 例句 shenotonlyplayswell butalsowritesmusic 她不但很会演奏 而且还会作曲 notonlymenbutalsowomenwerechosen 不仅仅是男的 女的也有被选中的 languagepoints 若连接两个成分作主语 其谓语通常与靠近的主语保持一致 例句 notonlyyoubutalsohehastoleave 不只是你 他也得离开 notonly放在句首 后接句子时要用倒装结构 例句 notonlyhadthepoormanbeenfined butalsohehadbeensenttoprison 这个可怜的人不仅被罚款 而且还被送进了监狱 2 beharmfulto对 有害例句 smokingisharmfultothehealth 吸烟有害健康 playingcomputergamesmuchisharmfultostudents 电脑游戏玩太多对学生有害 languagepoints 5 sharksareatthetopofthefoodchainintheocean secosystem 鲨鱼位于海洋生物系统食物链的顶部 atthetopof在 最高地位 用最高 最大 的 速度 声音等 例句 ilookedatthetopofhishead hishairshinyandpartedsmoothly 我看他的头顶 头发闪亮且平滑的分开 languagepoints heshoutedatthetopofhisvoiceinorderthathemightbeheard 他尽力大声叫喊 以便别人能听见 languagepoints 6 iftheirnumbersdroptoolow itwillbringdangertoalloceanlife 如果它们的数目降至过低 会给所有海洋生物带来危险 此句复数形式的numbers表达全海洋中鲨鱼的总量 当表示数值的高或低时 number要用high或low修饰 例句 inthatcountry thenumberofchildrengoingtoschoolishigherincitiesthanintownsandvillage 在那个国家 城市儿童入学人数比乡镇及农村要高 常与number搭配的动词有grow fall等 例句 thenumberoffamiliesthatowncarshasbeengrowingquicklyrecently 近来拥有轿车的家庭数量增长很快 7 environmentprotectiongroupsaroundtheworld suchaswildaidandthewwf areteachingthepublicabout finning 世界各地的环境保护组织 如野生救援协会和世界自然基金会 都在教育公众有关 猎翅 的行为 句中fin本为名词 指 鱼鳍 此句中的finning由动词化的fin 割鲨鱼鳍以获取鱼翅 的 ing形式转化而成 指课文中所陈述的 猎翅 这一行为 exercise 1 2013福建泉州 ifwetakeashowerinsteadofbath morewater a hassavedb cansavec canbesaved2 iwas inthrmiddleschoolofthetelephonecall a cutoffb cutdownc cutind cutaway homework write5measurestoprotecttheenvironment grammarfocus presentprogressive usedto passivevoice presentperfect modalverbs 现在进行时 presentprogressive 定义 表示说话时 瞬间 正在进行的动作 也表示目前或现阶段正在进行的动作 结构 be am is are v ing标志词 look listen now rightnow e g look theboyiscrying exercise whatafinedaytoday look whataretheydoing usedtodo与beusedtodoing usedtodosth 表示过去常常做某事 而现在往往不做了 后接动词原形 beusedtodoingsth 表示习惯于做某事e g iusedtogetupatsixo clock joeisusedtodrinkingacupofcoffeeeverymorning exercise 1 她过去常常周末和朋友去购物 sheusedtogoshoppingwithfriendsonweekends 2 他习惯于每天晚上睡得很晚 heisusedtostayingup 被动语态 passivevoice 定义 表示主语是动作的承受者 即行为动作的对象的一种语态 结构 be 过去分词e g anewschoolwasbuiltlastyear ourclassroomiscleanedeveryday exercise 1 刚才一些老年人参观了博物馆 2 工人们使用不同种类的机器工作 themuseumwasvisitedbysomeoldpeoplejustnow differentkindsofmachinesareusedtoworkbytheworkers 现在完成时 presentperfect 定义 表示动作已经完成 但对现在造成影响 或者表示从过去某一时间开始一直延续到现在并还可能持续下去的动作 结构 has have 过去分词标志词 already yet ever never since for e g ihaven tfinishedmyhomeworkyet exercise 1 i be inbeijingfortwoyears 2 i never hear ofthatmanbefore 3 tom work theresincetwoyearsago havebeen have heard hasworked 情态动词 1 情态动词本身有一定的词义 表示说话人的情绪 态度或语气 但不能单独作谓语 只能与其他动词构成谓语 常见的有 can could may might must need shall should will would 等 2 情态动词无人称和数的变化 后接动词原形 否定式是在情态动词后面加not 个别情态动词有过去式形式 可用来表达更加客气 委婉的语气 e g kencanclimbupthetresslikeakoala tracycouldrideabicyclewhenshewasfiveyearsold youmustn tplaywithfire itisdangerous exercise 1 我们不能在教室里吃东西 2 首先你必须完成作业 3 他现在不可能在家 4 她一定知道这个问题的答案 wecan teatintheclassroom youmustfinishyourhomeworkfirst hecan tbeathomenow shemustknowtheanswertothisquestion fillintheblankswiththecorrectformsoftheverbsinbrackets joe youever take partinanenvironmentalproject eric yes ihave i help withaclean updaylastyear itwas consider thebiggestclean upprojectthiscity ever have have taken helped considered had had joe howmanypeople take part eric i think morethan1 000people come tohelpout joe that sfantastic iguesseveryoneinthiscityis try toimprovetheenvironment eric yes wecan taffordto wait anylongertotakeaction took think came trying wait fillintheblankswiththeappropriatemodalverbsfromthebox canwouldcouldhavetoshouldmustmay might people thinkthatbigthings bedonetosavetheearth manyforgetthatsavingtheearthbeginswithsmallthings forexample you save may might must can electricitybyturningoffthelightswhenyouleavearoom you alsousereusablebagsinsteadofplasticbags ithinkit sagreatideathatyounow payforplasticbagsinsomestores andinsteadofdrivingtoschoolorwork you rideyourbikeorwalk ifit sfar you takethebus allthese could haveto can should can could smallthings addupandbecomebigthingsthat improvetheenvironment let stakeactionnow could would can makealistofthingsthatpeoplecandotohelptheenviron