初中英语语法复习——现在完成时课件.ppt

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1、Thepresentperfecttense现在完成时概念基本结构基本句型变化（一般疑问句，否定句，特殊疑问句）关键词（already,yet,since,for,sofar,just,）Heisfull.Hehashadabigbreakfast.1.过去某一时间点发生的动作对现在产生影响。功能：IhavelearnedEnglishfortenyears2.过去某一时间点发生的动作持续到现在或还将持续下去。基本结构Thepresentperfecttensehave/has+done助动词（可以帮助构成肯定、疑问和否定句）过去分词见书P1201.Hehascleanedhis

2、room.(写一个一般疑问句）Hashecleanedhisroom?2.Theyhavecomebackfromwork.(写否定句）Theyhaven’tcomebackfromwork.4.HehasbeentoChina,________?（写出反义疑问句部分）hasn’the3.ShehaslivedinLondonforfouryears.(划线部分提问）HowlonghasshelivedinLondon?WhatarethekeywordsforthePresentPerfectTense?A:______yourbrother______hishomeworky

3、et?(finish)B:Yes,he‘salreadydoneit.KeywordsHasfinishedyetalready注意：already用于肯定句，yet用于疑问句和否定句中A:_______youever_______tothepark?(be)B:No,never.KeywordsHavebeenyetalreadyevernever注意：ever曾经用于疑问句中never从不带有否定意义I______just________thedesk,youcantakeittoyourclassroom.(mend)Keywordshavemendedyetevernev

4、erjustalreadyJust刚刚与现在完成时连用一般置句中Justnow刚才与一般过去时连用Tom___________inthefactorysinceheleftschooltenyearsago.(work)Keywordshasworkedyeteverneversincealreadysince后面带过去时间或有一般过去时的句子A:Howlong______you________inthisschool?(teach)B:For6years.Keywordshavetaughtyeteverneversinceforalready+一段时间We_______onl

5、y____________100treessofar.(answer)Keywordshaveplantedyeteverneversinceforjustalreadysofar到目前为止Keywordsyeteverneversinceforjustbeforealreadysofarinthepast10yearstwice也可以是其他表示次数的词howlongSomeverbscan'toftenbeusedwith"for"or"since"Hehasboughtthebook.Hehasboughtthebookforaweek.Hehashadthebookfora

6、week.buyhavecome/go/gettobeinjoinbeinbea…memberleavebeawayborrowkeepbeginbeonfinishbeoverdiebedeadreturnbebackPleasepointoutanymistakesandcorrectShehasboughtthecomputerfortwoyears.hadbuyhave/hashadPleasepointoutanymistakesandcorrectHowlonghaveyoucometotheUnitedStates？beenincometohave/hasbeeni

7、nbuyhave/hashadPleasepointoutanymistakesandcorrectAnnhasgonetoChinasincethreemonthsago.beenincometohave/hasbeeninbuyhave/hashadgotohave/hasbeeninPleasepointoutanymistakesandcorrectMybrotherhasjoinedthearmyforfiveyears.beeninbeenasoldiercometo