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1、英语人教版八年级下册英语语法专题：现在完成时一、基本结构（构成）：have/has+PP 助动词助动词（可以帮助构成（可以帮助构成肯定、疑问和否定句）肯定、疑问和否定句）Enjoy learing EnglishEnjoy learing English1.He has cleaned his room.(改为改为一般疑问句）一般疑问句）Has he cleaned his room?2.She has lived in London for four years.(划线部分提问）划线部分提问）How long has she lived in London?Enjoy learing Eng
2、lishEnjoy learing English即学即练即学即练(1)：3.He has been to China,_ _?（写出反义疑问句部分）（写出反义疑问句部分）hasnt he 4.They have come back from work.(写否定句）写否定句）They havent come back from work.Enjoy learing EnglishEnjoy learing English即学即练即学即练(1)：二、现在完成时的主要用法（定义）She has gone to shanghai.(她已经去了上海她已经去了上海,对现在造成的结果是对现在造成的结果是:
3、She isnt here now.)1.1.用法用法：表示过去发生的某一动作表示过去发生的某一动作 对现在造成的影响或结果。对现在造成的影响或结果。Enjoy learing EnglishEnjoy learing EnglishShe went to shanghai yesterday.2.用法用法：表示表示过去某一时间已经开始、持续到过去某一时间已经开始、持续到现在现在（也许还会继续进行下去）动作或状态，（也许还会继续进行下去）动作或状态，常和表示常和表示一段时间状语一段时间状语，如如since+过去的时间过去的时间点点,for+时间段等连用。时间段等连用。（注意：句中谓语动词要用延
4、续性动词注意：句中谓语动词要用延续性动词）Enjoy learing EnglishEnjoy learing EnglishI I have learnedhave learned English English for seven yearsfor seven years一段时间的表达方法有两种一段时间的表达方法有两种:1）for +时间段时间段eg:I _English_.我学英语已经两年了。我学英语已经两年了。for a year for two weeks for three yearsfor two yearshave studiedEnjoy learing EnglishEnj
5、oy learing English过去的某一时刻（时间点）过去的某一时刻（时间点）一般过去时态的时间状语从句一般过去时态的时间状语从句 2)since+They _in Beijing_.他们自年就一直住在北京他们自年就一直住在北京。since last week,since 3 years agosince nine,since 2008 since you came to Chinasince you got homesince 1980have livedEnjoy learing EnglishEnjoy learing English 即学即练(2):选用选用 for和和 sinc
6、e填空填空:1.We havent seen each other _ a long time.2.His father has been in Hefei _ 10 years ago.3.The film has been on _ 20 minutes.4.Tom has worked in the company he left school ten years ago.forforsinceEnjoy learing EnglishEnjoy learing Englishsince He has bought the book.He has bought the book for
7、a week.He has had the book for a week.Enjoy learing EnglishEnjoy learing English 非延续性动词在肯定句、疑问句中不能肯定句、疑问句中不能与时间段连用与时间段连用，这些动词是：become,become,begin,buy,borrow,arrive,come/go,begin,buy,borrow,arrive,come/go,die,fall,finish,get to know,join,die,fall,finish,get to know,join,leave,marry leave,marry 等。等。为
8、了表述这种意思，我们常用相应的延续性延续性动词动词”来代替短暂性动词.She has bought the computer for two years.hadbuyhave/has hadEnjoy learing EnglishEnjoy learing EnglishHow long have you come to the United States？been income tohave/has been in buyhave/has hadEnjoy learing EnglishEnjoy learing EnglishI have borrowed the dictionary
9、since 3 days ago.kept come tohave/has been inbuyhave/has hadborrow have/has kept Enjoy learing EnglishEnjoy learing English“延续性动词延续性动词延续性动词延续性动词”来代替短暂性动词 come tohave/has been inbuyhave/has hadgo tohave/has been ingot tohave/has been injoin have/has been inhave/has been a soldier leave have/has been
10、away borrow have/has kept begin have/has been on finish have/has been over die have/has been dead open have/has been openEnjoy learing EnglishEnjoy learing English 即学即练(3):Enjoy learing EnglishEnjoy learing English 1.1.我买了这块手表五年了。我买了这块手表五年了。I I have boughthave bought this watch for five years.this w
11、atch for five years.I I have hadhave had this watch this watch forfor five years/five years/sincesince 5 years 5 years ago.ago.2.2.这位老人已经死了十年了。这位老人已经死了十年了。The old man The old man has diedhas died for ten years.for ten years.The old man The old man has been deadhas been dead for ten years for ten yea
12、rs /since 10/since 10 years ago.years ago.翻翻 译译 练练 习习 Enjoy learing EnglishEnjoy learing English Other key words:yet ever never just before already so far in the past/last 10 years We _ only _ 100 trees so far.have planted have have been tobeen to havehave gone togone to have been inhave been in去过某地
13、已经回来去过某地已经回来去过某地已经回来去过某地已经回来常与常与常与常与ever,never,ever,never,once,twice,once,twice,连用连用连用连用 一直留在某地一直留在某地一直留在某地一直留在某地与与与与for/sincefor/since连用连用连用连用用用用用how long how long 提问提问提问提问去了某地去了某地去了某地去了某地还没回来不与还没回来不与还没回来不与还没回来不与只用于第三人称只用于第三人称 Her sister _ Australia,She left this morning.has gone tohas gone to Enjo
14、y learing EnglishEnjoy learing English have/has have/has been tobeen to have/has have/has gone togone to have/has have/has been inbeen in去过去过去过去过常与常与ever,never,ever,never,once,twice,once,twice,连用连用 在在在在与时间段连用与时间段连用用用how long how long 提问提问去了去了去了去了说话时某人不在说话时某人不在只用于第三人称只用于第三人称 A:Where is Bob?B:He _ Jap
15、an with his sister.has gone tohas gone to Enjoy learing EnglishEnjoy learing English have/has have/has been tobeen to have/has have/has gone togone to have/has have/has been inbeen in去过去过去过去过常与常与ever,never,ever,never,once,twice,once,twice,连用连用 在在在在与时间段连用与时间段连用用用how long how long 提问提问去了去了去了去了说话时某人不在说
16、话时某人不在只用于第三人称只用于第三人称 A:How long _ you _ China?B:I _ here for 3 years.have been have been have been in have been in Enjoy learing EnglishEnjoy learing English have/has have/has been tobeen to have/has have/has gone togone to have/has have/has been inbeen in去过去过去过去过常与常与ever,never,ever,never,once,twice
17、,once,twice,连用连用 在在在在与时间段连用与时间段连用用用how long how long 提问提问去了去了去了去了说话时某人不在说话时某人不在只用于第三人称只用于第三人称 A:_ you ever _ the city?B:No,never.Have been to Have been to Enjoy learing EnglishEnjoy learing English1 1、复习并巩固现在完成时的用法、复习并巩固现在完成时的用法。2 2、合作完成补充专题练习（学案）、合作完成补充专题练习（学案）。Enjoy learing EnglishEnjoy learing English3 3、独立完成、独立完成A A计划专题练习九计划专题练习九。Thank Thank youyouEnjoy learing EnglishEnjoy learing English此课件下载可自行编辑修改，仅供参考！此课件下载可自行编辑修改，仅供参考！感谢您的支持，我们努力做得更好！谢谢感谢您的支持，我们努力做得更好！谢谢