授课课件115省公开课一等奖新名师优质课比赛一等奖课件.pptx

Unit 1 Past and present第第4课时课时第1页dodiddonebewas/werebeencomecamecomechoosechosechosen第2页Present perfect tense 现在完成时现在完成时1含义：含义：(1)表示过去发生事连续到现在；表示过去发生事连续到现在；(2)表示过去发生事情对现在产生影响。表示过去发生事情对现在产生影响。eg：Mr Wang has lived here since he came to Anhui.自王先生来到安徽，他就住在这儿了。I have lost my mobile phone.我手机丢了。第3页2组成：组成have/has(not)动词过去分词。动词过去分词。eg：He has not returned the book to me yet.他还没有把书还给我。She has never seen this film.她从没看过这部电影。第4页(2)规则动词过去分词改变规则规则动词过去分词改变规则3.动词过去分词动词过去分词构词法示例a.普通直接在词尾加edworkworkedopenopenedb.以不发音字母e结尾词直接加dlivelivedskateskated(1)不规则动词过去分词需切记书本上不规则动词表。不规则动词过去分词需切记书本上不规则动词表。第5页构词法示例c.以“辅音字母y结尾词，变y为i，再加studystudiedhurryhurriedd.以“元音字母y”结尾词，直接加edplayplayedstaystayede.以“元音字母一个辅音字母”结尾重读闭音节词，先双写这个辅音字母，再加edstopstoppedplanplannedpreferpreferred第6页4惯用时间状语：惯用时间状语：just 刚才；yet 用于疑问句，表示“已经”，用于否定句表“还”；ever 曾经；already 用于陈说句，表示“已经”，否定句中改为yet；never 用在句中表示否定，从未，从不；recently 最近，最近。第7页eg：Have you found your lost key yet?你已经找到你丢失钥匙了吗？I have never heard of this singer before.我以前从未听说过这个歌手。第8页一、用所给词适当形式填空1.I _(study)in America for over three years.2.The young man _(live)alone since he graduated from college.(兰州)3.This is the best film that I _(see)so far.4.Hello.Can I speak to Miss Brown?Sorry,she _(fly)to Canada already.Shell be back in a week.have studiedhas livedhave seenhas flown第9页5.In the past two weeks,the artist _(draw)many pictures about his hometown.6.I _(know)Jimmy for over two days and now we are good friends.7.Why are the windows so dirty?Because we _(not clean)them for a long time.8My life _(change)a lot in the past few years.(枣庄改编)as drawnhave knownhavent cleanedhas changed第10页 二、单项选择9.Dave，we will leave in 10 minutes.Are you ready?No，I_ our guidebook and towels yet.(玉林)A.dont pack B.didnt packC.have packed D.havent packed【点拨点拨】考查现在完成时使用方法。依据考查现在完成时使用方法。依据No可知还没有准备好，可知还没有准备好排除排除C；依据句意；依据句意“戴夫，我们将在十分钟后出发。你准备好戴夫，我们将在十分钟后出发。你准备好了吗？了吗？没有，我还没有，我还我们旅游指南和毛巾。我们旅游指南和毛巾。”可知到现在可知到现在还没准备好，对现在有影响，用现在完成时态。故选还没准备好，对现在有影响，用现在完成时态。故选D。D第11页10.The singers _ many concerts in the countryside since.(湘潭)A.hold B.held C.have held【点拨点拨】语法判定法语法判定法。当句子时间状语为当句子时间状语为“since 过去过去时间点时间点”时，句子用用现在完成时所以选时，句子用用现在完成时，所以选C。C第12页11.Have you finished your homework?_.Just half of it.How about you？(苏州)A.Not at all B.Not likely C.Not a bit D.Not yet【点拨点拨】本题用本题用交际法交际法。考查交际用语。依据答语中。考查交际用语。依据答语中“只只完成了二分之一完成了二分之一”可知，还没有完成家庭作业，故选可知，还没有完成家庭作业，故选D。D第13页12.Ann is a nurse in our hospital.She_ here for ten yearsA.works B.has worked C.worked D.was workingB【点拨点拨】本题用本题用题眼法题眼法。由。由“for ten years”可知本句为现可知本句为现在完成时。故选在完成时。故选B。第14页13.Wow!You _ dinner!Lets eat now.(河北)A.cook B.are cookingC.will cook D.have cooked14.I am surprised at the new look of my hometown，for it _ a lot over the years.(安徽)A.Changed B.changesC.will change D.has changedDD第15页15.You speak English so well._ have you learned English?For 5 years.(吉林)A.How many B.How longC.How often D.How farB【点拨点拨】考查特殊疑问词组使用方法。依据答语考查特殊疑问词组使用方法。依据答语“For 5 years.”可知，提问是可知，提问是“时间段时间段”，故选，故选B。第16页本本节节课课主主要要学学习习了了以以下下知知识识点点，请请同同学学们们及及时巩固练习：时巩固练习：现在完成时使用方法现在完成时使用方法第17页