Unit 2 Discovering Useful Structures 导学案-人教版高中英语必修第二册

校训：严勤活实第2页共4页第5页共4页第5页共4页第一学期高一级英语导学案【单元标题】Book2Unit2第4课时DiscoveringUsefulStructures导学案【单元主题】本单元以“学会保护濒危动物”为主题，通过学习我国保护珍稀野生动物的措施和取得的成就，了解野生动物的生存现状。【学习目标】Learntoknowthestructureofpresentcontinuouspassivevoice.Learntousepresentcontinuouspassivevoicetodescribetheongoingevents.【学习过程】【自主探究案】现在进行时的被动语态Task1：Underlinethepresentcontinuouspassivevoiceinthesentencesanddiscussitsfunction.Africanelephantsarebeinghunted.Whatisbeingdonetohelpthem?Whatmeasuresarebeingtakentohelpthem?句式结构:__________________________________________________________Task2:Discoveringthestructureofpresentcontinuouspassivevoice现在进行时基本结构(1)肯定结构:__________________________________________(2)否定结构:__________________________________________(3)一般疑问句结构:_____________+主语+beingdone?(4)特殊疑问句结构:_______________+am/is/are+主语+beingdone?【应用实践】句型转换。①Thewallsarebeingpaintednow.(变成一般疑问句)_____________________________________________________②Theexperimentisbeingcarriedout.(变成否定句)_____________________________________________________Task3:现在进行时的被动语态的基本用法【观察思考】▶Sheisbeingexaminedbythedoctornow.▶Anewteachingbuildingisbeingbuiltinourschool.▶Whyareyoualwaysbeingpunishedbyyourteacher?▶Shemaybebeingpunishedbyhermother.【探究总结】(1)表示此刻正在进行的被动动作,常与now、look等词连用。(2)表示现阶段正在进行的被动动作。(3)表示一种习惯性的被动行为,常与__________、frequently等词连用,表示有赞赏、羡慕、讨厌等感情色彩。(4)可与部分__________连用,表示对正在发生的被动动作的推测。【应用实践】完成句子。①Myyoungerbrother__________now_________________(正在被面试).②Threeforeigners__________now____________________(正在被治疗)inChina.③He__________always____________________(总是被表扬)bytheleader.Task4：现在进行时的被动语态的易混点【观察思考】▶Look!Thechildrenarebeingtakencareofbytheiraunt.▶Childrenaretakengoodcareofatschool.(指通常情况)▶Theliftisinuse.=Theliftisbeingused.▶Thebridgeisunderrepair.=Thebridgeisbeingrepaired.▶Withthepopulationincreasing,morelandisneeded.▶John,comehere.Youarewantedonthephone.【探究总结】(1)在现在进行时的被动语态结构中不可漏掉being。(2)由“动词+介词/副词”构成的短语动词,要把它们作为整体看,即把它们看作一个及物动词,动词与介词或副词不能拆开或漏掉(3)“_____________________”结构可代替现在进行时的被动语态结构。(4)一些表示状态、心理活动、拥有、存在等的动词,如have、want、need、love等,一般不用进行时的被动语态,常用____________的被动语态表示此时此刻或目前主语承受谓语动词的动作。【应用实践】(1)单句改错。Heisalwaysbeinglaughedbyothers.____________________________________________________(2)完成句子。Thehabitatofpandas_______________________(正被保护)bythelocalgovernment.[合作学习案]Task5:FinishExerciseⅠonpage29inyourtextbook.Ⅰ.单句语法填空1.Heisalways_______________(surround)byotherstudents,tellingstories.

2.Thewayaheadis_______________(block)bythepolice,sowehavetotakeanotherway.

3.Whyisshe_______________(follow)byherfatheratthemoment?

4.Isthemeeting_______________(hold)inthegreathallnow?

5.Morehands_______________(need)tofinishthetasknow.

Task6:FinishExerciseⅡonpage29inyourtextbook.Ⅱ.完成句子1.事故原因正在调查中,所以你不必担心。Thecauseoftheaccident_______________________soyouneedn’tworry.

2.此刻,我女儿的英语作文正在课堂上被诵读。Mydaughter’sEnglishcomposition_______________________inclassnow.

3.如今手机正在为越来越多的青少年所使用。Mobilephones_______________________bymoreandmoreteenagersnowadays.

4.正在为村民们建造新公寓,明年他们就可以入住了。Newapartments_______________________forthevillagersandtheywillmoveinnextyear.

5.那个小女孩正在接受检查。请耐心等待。Thelittlegirl_______________________.Pleasewaitwithpatience.

[课后巩固]Task7:MorepracticeonP29onthetextbookⅢ.句型转换Theteacherisquestioningtheboyabouthisabsencefromtheclass.(改为被动句)___________________________________________________________2.Hisbedroomisbeingpainted.(改为一般疑问句)___________________________________________________________3.Hiscarisbeingrepairedattheroadside.(改为用where引导的特殊疑问句)___________________________________________________________4.Hisdesignofthenewbridgeisunderdiscussion.(改为同义句)___________________________________________________________5.WhatIamtellingyouisthetruth.(改为被动句)___________________________________________________________【自我评价（self-evaluation）】Thinkaboutthispassagelearningandcompletethefollowingform.Rateyourselfonascaleoffive:onebeinglowandfivebeinghigh,andputitintoyourportfolio.ThingsIcan