初三英语Unit11Plantingtrees知识精讲一.本周教学内容：Unit11PlantingtreesI.词汇：dig,drop,soil,directly,leaf,flood,prevent,northern,wide,blow,sand,towards,farmland,point,correctII.词组和惯用法sothat以便、以致hearof听说runaway流失、逃跑inthisway用这种方法pointto指向faraway很远、遥远thanksto由于、幸亏themorethebetter越多越好handin交上来moreorless多少有点…TreePlantingDay植树节knock…into把…插进asoftenaspossible尽可能多地keep…from阻止…做theGreatGreenWall绿色长城millionsof成百万的inafewyears’time几年后in/outofclass课内/外III.交际用语Thegroundmustbejustright.It’sbestto…Theholeshouldnotbetoodeep.What’snext?Wonderful!Themore,thebetterIV.语法：含有情态动词的被动语态重点与难点：1.被动语态的用法（1）被动语态的用法A.不知道谁是动作的执行者B.没有必要指出谁是动作的执行者Manyflowershavebeengrownoneachsideoftheroad.Theoldmanwastakentothehospitalatonce.（2）含有情态动词的被动语态情态动词（can,may,should,must等）＋be＋动词过去分词Thesethingscanbeboughtatthisstore.Therulesoftheschoolmustbekeptbythestudentsatschool.Thiskindofflowersshouldbewateredtwiceaday.Thedishesmaybeputinthecupboard.（3）含有两个宾语的句子由主动语态变为被动语态时，只将其中一个宾语变成主语，另一个不变。主动语态：Herfathergaveherapresentonherbirthday.被动语态：Apresentwasgiventoherbyherfatheronherbirthday.主动语态：Thehostpassedtheguestacupoftea.被动语态：Acupofteawaspassedtotheguestbythehost.注意：直接宾语作主语时，谓语部分不要漏掉介词for或to.（4）含有复合宾语的主动语态变为被动语态，只将复合宾语中的逻辑主语（即宾语）变成主语，其余部分不变。主动语态：Theyfoundherdancingintheroom.被动语态：Shewasfounddancingintheroom.2.plant/grow（1）plant主要指种植这一行为EveryTreePlantingDaytheyoungpeoplegotoplanttreebytheriver.Thefarmerswereplantingrosesinthefieldatthistimeyesterday.（plant可做名词，植物）（2）grow主要指种植以后的栽培、管理过程Peoplegrowwheatinthenorth.Theoldmangrowsmanyflowersinhisyard.（3）grow的其他用法A.用作不及物动词，“成长、长大、增长”Thetownisgrowingrapidly.这个城镇正在迅速发展Shewantstobeadoctorwhenshegrowsup.B.用作不及物动词，表示“大小、体积、数量的增长”Theworld’spopulationisgrowingmuchfasterthanbefore.Shegrewinexperience.她增长了经验。C.可作系动词表示“渐渐变得”与become,get一样，后接形容词。Theweatherisgrowingcolderandcolder.3.earth/ontheearth/onearth（1）earth意为“土，泥土，写冠词the连用，表示地球、大陆、陆地”Covertherootswithearth.用土覆住根部。Theearthgoesroundthesun.（2）ontheearth在地球上、大陆上Weliveontheearth.Thereareallkindsofanimalsontheearth.（3）onearth究竟、到底A.放在最高级之后，用来强调最高级Edisonwasthegreatestinventoronearth.B.意为“到底、究竟”放在代词who,what或副词when,where,why,how之后，以加强疑问。Whyonearthdidn’tyougotoschool?你究竟为什么没有上学。Whatonearthisit?这到底是什么？4.inorderto/inorderthat（1）inorderto＋动词不定式否定形式：inordernottodosth.Theassistanttoldthestudentstokeepquietinordernottodisturbothers.（2）inorderthat后接从句，表示目的，从句中常用may,can,could,might,willbeableto,would,should等情态动词。Hespokeslowlyinorderthateveryonecouldunderstandhim.5.thanksto/becauseof（1）thanksto意为“多亏、由于”，带有感情色彩，表示由于某种原因得到了好的结果。Thankstoherhelp,theoldwomanfoundherdaughter.ThanksJim，wefinisheditfirst.（2）becauseof无感情色彩，只表示某种原因。Hedidn’tcomebecauseofsickness.Hisfacewentredbecauseofwhatshesaid.6.knock构成固定短语knockat/onthedo...
