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时间:2018-08-03
《牛津版八年级下册英语 unit1 past and present grammarppt课件》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Unit1PastandpresentGrammarPresentperfecttense学科网,zxxk.fenghuangxueyiAnswersomequestionsabouttheconversationbetweenMrChenandMillie.RevisionModel1:HasSunshineTownchangedalot?Yes,ithas.Model2:HaveMrChenandhiswifemovedoutofthetown?No,theyhaven’t.Questions:1.Hasthegove
2、rnmentbuiltanewpark?2.HavemostofMrChen’soldfriendsmovedaway?3.Hasitbecomeimpossibleforthemtoseeeachotherasoftenasbefore?Yes,ithas.Yes,theyhave.Yes,ithas.ThePresentPerfectTense(现在完成时)1.Weusethepresentperfecttensetotalkaboutanactionthatstartedinthepastandcontinuesto
3、thepresent.e.g.IhavelivedheresinceIwasborn.Shehasworkedinthisfactoryfornineyears.2.Weusethepresentperfecttensetotalkaboutanactionthathappenedinthepastandhaveaconnectionwiththepresent.e.g.EddiehasjusteatenHobo’sfood.(Eddieatethefood,andnowHobohasnothingtoeat.)Ihave
4、alreadyseenthefilm?(IsawthefilminthepastandnowIstillremembersomethingaboutthefilm.)学科网,zxxk.fenghuangxueyi3.Wealsousethepresentperfecttensetotalkabouthowmanytimesanactionhashappenedtillnow.e.g.Ihavealreadyreadthisbookmanytimes.MrChenhasbeentotheUSAtwice.I/You/We/T
5、heyhavearrived.He/She/Ithas4.Wemakepositivestatementsinthepresentperfecttenselikethis:5.Wemakenegativestatementsinthepresentperfecttenselikethis:I/You/We/Theyhavenotarrived.He/She/Ithashavenot=haven’thasnot=hasn’t6.Weaskandanswerquestionsusingthepresentperfecttens
6、elikethis:HaveI/you/we/theyarrived?Hashe/she/itYes,I/you/we/theyhave.he/she/ithas.No,I/you/we/theyhaven’t.he/she/ithasn’t.7.Weformthepastparticiplesofregularverbsbyadding-ed,justaswhatwedotoformthesimplepasttenseoftheseverbs.Mostverbs+edfinish→finishedVerbsendingi
7、n-e+dchange→changedVerbsendinginaconsonant+y-y+iedcarry→carriedShortverbsendinginavowel+aconsonantdoubletheconsonant+edstop→stopped8.Weformthepastparticiplesofirregularverbsdifferently.Herearesomeexamples.Nochangecome→comehurt→hurtChangethevowelhold→heldwin→wonCha
8、ngetheconsonantlend→lentbuild→builtChangethevowel(s)andtheconsonant(s)catch→caughtkeep→keptforget→forgottentell→toldOthersbe→beenhave→hadfall→fallenfly→
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