八年级英语现在完成时态课件

1、Present Perfect TenseDesigner: Ma Hongjie Ma Ying Middle School 1导入：Find out which sentences are past tense and which sentences are present perfect tense .找出下列哪些句子是过去式，哪些是现在完成时态。I borrowed this book a month ago.He had his breakfast at 6:00.When did you come here?He has gone to the bookshop to buy so

2、me books.My teacher has been away from Nanjing for 3 days.2.she has been away for two weeks.2Present perfect tense 现在完成时构成:用法一：表示过去发生的某一动作对现在造成的影响或产生的结果.现在完成时这一时态强调是过去动作与现在的联系,也就是强调现在的影响和结果.have/has + 过去分词3用法二： for+段时间 since+点时间 since+句子（过去时）E.g. Kate has lived here for 3 years. Kate has lived here

3、since 3 years ago. Kate has lived here since she came to China.表示过去某个时间开始的动作或存在的状态，一直持续到现在并可能还将持续下去。动词使用延续性动词。常与for或since引导的时间连用41.都表示过去发生的事2.现在完成时强调过去和现在的联系，不能和具体的时间状语连用；3.一般过去时强调过去发生的事或状态与表示过去的具体时间连用（last, ago, yesterday, etc. ）presentpastI have lived here for two yearsI lived there 2 years ago5A现

4、在完成时态是一个属于现在时态的范畴，所以它可以和包括“现在时刻”在内的时间状语连用。如：Now, today, this morning / week / month / year, by now, so far, up to now, already, before, just, ever, never, always, recently, lately.等等。如：I have done nothing today.我今天什么事情也没有干。We have had four lessons this morning. 今天上午我们上了四节课。（说话时还没有超出上午的范围）6B当强调行为的行为时

5、间、执行者、行为方式、行为场所、行为原因时，句中一般用一般过去时，而不用或者很少用现在完成时，间或用现在完成时也是为了强调结果。如：Who did it? How did he do it? Why did he do it? Where did he do it? When did he do it?7C.非延续性动词的否定式可以和表示一段时间的时间状语连用，表示这种动作的否定状态的延续。如：I havent bought anything for a week / since you left.我已经有一个礼拜没有买东西了。/自从你离开以后我没有买过任何东西。8D为了准确地判断动词的延续性

6、和非延续性，请记住下面的歌诀： 动词延续非延续，要用“一直”加动词； 说得通是延续动词，说不通是非延续动词。 可以说：一直有have/进行be on/保管keep/在组织里be in/是成员be a身份 不能说：一直买buy/开始begin/借入borrow/到达reach, get to, arrive/参加join,等等。9常见非延续性动词和延续性动词的转变arrive/come/go to die become a borrowLeave/ move buy openjoin start/begin finish/ endcatch a cold get up get to know g

7、et out close wake upgo to sleepbecome interested in be in be deadhavekeepbe away / be out be abe in/a member ofbe openbe onbe overhave a coldbe upknowbe outbe closedbe awakebe asleep/ sleepbe interested in10Exercises His father has died. (for 2 years)The football match has begun.(since9:00a.m)The tw

8、ins have joined the army. (since they are 18years old)My teacher has just left Nanjing. (for 3 days)His father has been dead for 2 years.The football match has been on since 9:00 a.m.The twins have been soldiers/ been in the army since they are 18years old. My teacher has been away from Nanjing for

9、3 days11重点句型:It is/ has been+段时间+since从句 段时间+has passed+ since从句eg. 他死了两年了：He died two years ago.He has been dead for two years /since two years ago It is/ has been two years since he died.Two years has passed since he died. 121. 这本书我借了一个月了。I borrowed this book a month ago.It is/ has been a month si

10、nce I borrowed the book.I have kept the book for a month. /since a month ago.A month has passed since I borrowed the book.13Exercises Tom 在哪儿？ 他去书店买书了。我在北京待了5年了。Jack 去过上海两次了-Where is Tom?-He has gone to the bookshop to buy some books.I have been in Beijing for 5 years.Jack has been to Shanghai twice

11、.14Correcting 1. I have borrowed the book for 3 months.2. My bother has joined the army since he was 18.3. Jack and Tom have lived here since 5years.4. The film has been on since I have come to the cinema.5. When has Mr. Li caught a bad cold? have kepthas been in/ been a member of the armysince 5 years ago/ for 5 yearscame didcatch15练习将下列句子翻译成英文。1. 从两点钟起我就在这里了。2. 她已经走了一个礼拜了。3. 从上礼拜五他就生病了。4. 他参军已经有五年了。5. 自从五年前他就在这里了。16 答案：1.I have b