Unit3DiscoveringUsefulStructures名師教學設計課時內(nèi)容Talkaboutsomethingthathasbeendone主題語境:人與社會主題群:科學與技術(shù)子主題:科技發(fā)展與信息技術(shù)創(chuàng)新語篇類型:文字、練習文本分析:本節(jié)課設計了三個部分，第一部分比較現(xiàn)在完成時主動語態(tài)和被動語態(tài)的區(qū)別，第二部分把主動語態(tài)變成被動語態(tài)，第三部分是讀一首含有現(xiàn)在完成時被動語態(tài)的詩歌，并嘗試寫一首含有現(xiàn)在完成時被動語態(tài)的詩歌。針對文本練習設置少，教師應補充適當練習以幫助學生理解和掌握現(xiàn)在完成時被動語態(tài)的用法。課時目標1.學習現(xiàn)在完成時的被動語態(tài)。2.提高語法的實踐運用能力。重點難點重點:對現(xiàn)在完成時被動語態(tài)的理解。難點:嘗試使用現(xiàn)在完成時的被動語態(tài)寫一首詩歌。教學準備教師準備:現(xiàn)在完成時被動語態(tài)的相關(guān)練習。學生準備:預習現(xiàn)在完成時被動語態(tài)的用法。教學過程StepI學習理解活動一:情境導入（Guessinggame)Askstudentstoguesswhathasbeenchangedintheclassroom?(1)Thelights___________________________________(2)Theblackboard___________________________________(3)Thedoor___________________________________(4)Thewindows___________________________________(5)Thefloor___________________________________Suggestedanswers:(1)Thelightshavebeenturnedoff.(2)Theblackboardhasbeencleaned.(3)Thedoorhasbeenclosed.(4)Thewindowshavebeenopened.(5)Thefloorhasbeencleaned.活動二:識別時態(tài)（SB,P30,Part1)Readthepairsofsentences.Underlineandcomparethedifferentverbforms.Jan’slifehasbeengreatlyimprovedbytheInternet.MuchhasbeenwrittenaboutthewondersoftheWorldWideWeb.TheInternethasgreatlyimprovedJan’slife.PeoplehavewrittenmuchaboutthewondersoftheWorldWideWeb.現(xiàn)在完成時的被動語態(tài)表示動作發(fā)生在過去，到現(xiàn)在已經(jīng)完成或?qū)ΜF(xiàn)在仍有影響，其構(gòu)成是:have/hasbeen+done。例如:Thecomputershavebeenusedincommunication,financeandtrade.Thecomputershavebeenputintorobots.Ithasbeenusedtomakemobilephonesaswellashelpwithmedicaloperations.活動三:控制性練習（SB，P30，Part2)1.Gothroughthesentencesandmakesurestudentsunderstandtheirmeanings.2.Askstudentstochangethesentencesintothepresentperfectpassivevoiceaccordingtotheexample.EXAMPLEThey’vebuiltakindofnewPCwithmorefunctions.AkindofnewPChasbeenbuiltwithmorefunctions.Suggestedanswers:(1)Thesoftwarehasbeendownloadedtohelpmyphonebatterylastlonger.(2)Anidentitycardhasbeenlostbysomeone.(3)HastheWi-Fipasswordbeenconfirmed?(4) Hasthebuttonbeenpressedyettocopythefile?(5) Hasacommentabouttheonlinedatabasebeenmade?StepII 應用實踐活動四:情境練習Showsomepicturesandaskstudentstomakemoresentenceswiththepresentperfectpassivevoice.Situation1:Suggestedanswer:Morenewbuildingshavebeensetup.Situation2:Suggestedanswer:Moretreeshavebeenplanted.Situation3:Suggestedanswer:Theoldcomputerhasbeenreplaced.【設計意圖】在對現(xiàn)在完成時的被動語態(tài)有了初步了解和認識之后，提供語境，讓學生學會運用，加深理解，提高學生在語境中使用時態(tài)的能力。StepIII遷移創(chuàng)新活動五:語境中應用時態(tài)（SB，P30，Part3)l.Readthepoem.LookatthewayyourfacehasbeenwashedLookatthewayyourteethhavebeenbrushedLookatthewayyourshoeshavebeencleanedYou’dbetterdothemagain.LookatthewaytheflowershavebeenplantedLookatthewaythegrasshasbeencutLookatthewaythepathshavebeensweptIhopethatyou’llcomehereagain.2.Thenthinkofyourownsituationandwriteasimilarpoem.【設計意圖】通過朗讀含有現(xiàn)在完成時被動語態(tài)的詩歌，把學生置入新的語境中學習時態(tài)，然后讓學生發(fā)揮想象力，寫出相似的詩歌，有助于對現(xiàn)在完成時的被動語態(tài)有更深刻的理解和更準確