现在完成时ppt课件.ppt
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1、Present perfect tense,中考专项复习-现在完成时,Learning aims 学习目标,通过本节课的学习,我能掌握现在完成时的句型,构成及动词过去分词的变化规则。系统掌握时态用法,并能根据具体的语言环境熟练使用。在用法上区分现在完成时与一般过去时。,现在完成时,Preview-check,Exercises,Focus,Self-study,现在完成时态的概念,句式构成。动词过去分词的变化规则。3.already与yet,以及have been to与have gone to 的用法区别,并能运用。4.对since+时间点或过去的句子,for+时间段的理解和运用。5.一般过
2、去时的概念。,Preview-check,现在完成时态的概念,句式构成。动词过去分词的变化规则。3.already与yet,以及have been to与have gone to 的用法区别,并能运用。4.对since+时间点或过去的句子,for+时间段的理解和运用。5.一般过去时的概念。,Preview-check,现在完成时态的概念.1.用来表示过去发生或已经完成的动作对现在造成影响或后果。2.用来表示发生在过去某一时刻的,持续到现在的动作或状态。常与for(+时间段),since(+时间点或过去的句子)连用。,Preview-check,现在完成时态的构成.肯定句:主语+have/has
3、+过去分词+其他成分否定句:主语+have/has+not+过去分词+其他成分一般疑问句:Have/Has+主语+过去分词+其他成分?Yes,主语+have/has./No,主语+havent/hasnt.特殊疑问句:特殊疑问词+have/has+主语+过去分词+其他成分?,动词过去分词的规则变化:,1.一般情况直接加 ed,如askasked,workworked2.以不发音的e结尾,只加d,如loveloved,dancedanced3.以辅音字母加y结尾,把y变为i,再加ed,如trytried,studystudied4.以一个元音字母和一个辅音结尾的重读闭音节结尾的动词(以重读闭音节
4、或r音节结尾而末尾只有一个辅音字母),先双写末尾这个辅音字母,再加 ed,如shop/beg/hug/plan/control注:以l结尾的动词,尾音节重读时,双写l,如controlcontrolled;尾音节不重读时,双不双写都可以,如traveltraveled(美)/travelled(英)。,动词过去分词的规则变化,动词过去分词的不规则变化,如何巧记?,work play want move hope study copy carry taste watch stop try clap cook live,already与yet的用法区别.Have you read Little W
5、omen yet?Ive already finished reading it.She hasnt had any time to do it yet.She has read more than 100 different books already.,have been to与have gone to 的用法区别I have already been to Beijing three times.-Where is Tony?-Hes not here today.He has gone to Hangzhou.,对since+时间点或过去的句子,for+时间段的理解和运用。I have
6、 had this bike for three years.He has been dead since 1999.They have worked here since the factory opened.I have had the computer since six months ago.,Exercises,用所给词的适当形式填空。1.I_(join)the book club last month and I _(read)five books already.2.I only _(start)taking French classes last week and I _(le
7、arn)50 French words already.3.Tony _(buy)a pop music CD yesterday but he _(listen)to it yet.4.-Have you _(see)the robots at the science museum?-Yes,I _(go)there last weekend.,joined,have read,started,have learned,bought,hasnt listened,seen,went,Exercises,1.-_ you ever _ Dali?-Never.But I am going th
8、ere this vacation.Do;go to B.Have;been to C.Have;gone to D.Will;go to2.My aunt is a writer.She_ more than ten books since 1980.writes B.wrote C.has written D.will write3.The Smiths came to Shanghai in 2008,they there for three years since then.live B.lived C.have lived D.will live,C,B,C,Exercises,1.
9、They _ England and they will be back next week.A.have gone to B.have been to C.have gone in D.has been on2.Some students in Shanghai e-bags for several months.A.have B.have had C.had D.will have3.-Is Mr.Smith still in Shanghai?-Yes,he _ there for two months.A.has beenB.has gone C.has been toD.has go
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