第01讲现在完成时(练习版)-【暑假自学课】2022年新九年级英语暑假精品课(人教版).docx
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1、第01讲现在完成时彝【学习目标】1、复习现在完成时的结构及两种用法。2、掌握现在完成时与一般过去时的区别。3、掌握现在完成时中的延续性动词的用法【基础知识】【基础知识】.现在完成时的构成:havehas+过去分词(过去分词的构成有规那么变化和不规那么变化).现在完成时的四个基本句型肯定句He has finished the work.一般疑问句Has he finished the work? 回答 Yes ,he has. No, he hasnt.否认句He has not finished the work.特殊疑问句What has he done?1 .现在完成时的用法:A.表示过
2、去发生或已经完成的动作对现在造成的影响或结果,强调对现在造成的影想或结果)。例如:The car has arrived.车子来了。(结果:车子已在门口 )Someone has broken the window.有人把窗户打破了。(结果:窗户仍破着)B.表示过去已经开始,持续到现在的动作或状态,可以和表示从过去某一时刻延续到现在(包括“现在 在内)的一段时间的状语连用,如for+时间段、since+过去的时间点、疑问词how long等。例如:My uncle has worked at this factory for five years.我叔叔在这个工厂工作 已经五年了。Mr. Bl
3、ack has lived in China since 2002.自从 2002 年 Mr. Black 一直住在中国。How long have you been here?你来这里多久了 ?2 .在以下情形下用现在完成时(1)、九词语already已经 肯定句中或句尾e.g.: I have already found my pen.= I have found my pen already.yet已经否认句和疑问句句尾e.g.: I have not finished the work yet.Have you bought a computer yet?ever曾经句中e.g.: H
4、ave you ever seen pandas?never从不句中e.g.: I have never been to Beijing.just刚刚句中e.g.: I have just done my work.before以前 句尾e.g. : I have never been there before.so far到目前为止e.g.: So far he has learnt 200 words.how long多久e.g.: How long have you lived here?how many times多少次e.g.: How many times has he been
5、to Beijing?(2)、两结(3)、三词组for two monthsfor +一段时间Jim has lived here for 2 months.since last yearsince +过去点时间Lucy has been in Beijing since 3 years ago.since 3 years agosince 1990since he came heresince +过去时态句子He has been in China since he came here.l.havegone to 去了某地l.havegone to 去了某地表示“已经去了某地,在去那里的途中
6、或到达那里还没有回来”(去了北京)e.g.: He has gone to Beijing2.havebeen to 去过某地2.havebeen to 去过某地表示“曾去过某地,已经从那里回来了”(去过北京)e.g.: He has been to Beijing.3 .havebeen in表示“在某地呆多长时间”,常与表示一段时间的状语连用,如:since, for, how longe.g.: Mr. Brown has been in Beijing for three days.布朗先生来北京已经有三天了4 .如果句子里面没有时间状语,汉语意思能够加“已经”,往往用现在完成时态。e
7、.g.: Have you lost your library book?你已经弄丢了从图书馆借的那本书吗?5 .现在完成时态还常常用于以下句型They have planted many trees in the last few years.在过去的几年,他们已经种了 很多树。This is the best book I have ever read.这是我曾经读过的最好的一本书。It is the first time I have played the computer games.这是我第一次玩电脑游戏。6 .在现在完成时中,瞬间动词不能和一段时间状语连用e.g. : He has
8、 bought the book for 3 years.(错)因buy这个一次性动词不能和一段时间for 3 years连用,改正的方法有五种: He has bought the book.(去掉一段时间 for 3 years)He bought the book 3 years ago(改为一般过去时,使句子的意思不变) Its 3 years since he bought the book. = 3 years has passed since he bought the book.(改为固定句型It is -since-)(4)He has not bought the book
9、 for 3 years.(改为否认句) He has had the book for 3 years.(用延续性动词 have 代替 buy)7.还有其他瞬间动词也是这种情况,可参照前面的五种方法改正,前四种改法都一样,第五种改法各不相同,举例如下:(Dcome/arrive/get to/reach be heree.g: I have come here for 3 years.(错)e.g: I have come here for 3 years.(错)改为:I have been here for 3 years.leave/go 一be awaye.g. : He has le
10、ft for 3 hours.(错)e.g. : He has left for 3 hours.(错)改为: He has been away for 3 hours.begin/start be one.g.: The film has begun for 3 minutes.(错) 改为: The film has been on for 3 minutes.open 一be open / close 一 be closede.g.: The shop has opened for 3 years.(错)改为:The shop has been open for 3 years.die
11、一be deade.g.: His father has died for 3 years.(错)改为:His father has been dead for 3 years.flnish/end一 be over例:He has finished the work for 3 days.(错) 改为:The work has been over for 3 daysjoin be in / be a soldiere.g: I have joined the army for 3 years.(错)改为:I have been in the army for 3 years. 或 I ha
12、ve been a soldier for 3 years. buy /catch havee.g. : I have bought the bike for 3 years.(错) 改为:I have had the bike for 3 years.He has caught a cold for 3 days.(错) 改为:He has had a cold for 3 days.borrow keepe.g: I have borrowed the book for 3 years. (错)改为:I have kept the book for 3 years.还有其它的归纳如下:le
13、ave - be away begin/start - be oncatch a cold have a coldborrow - keepfinish - be overput on wearbuy - havedie - be deadfall ill -be illget up-be upcome/become/go be here become befall asleep - be asleepget to/ arrive/reach - be (in) get to know - knowjoinbe a member of.(成为 ,的一 员) open-be open close
14、-be close break be broken get up 一 be up marry 一 be married lose 一 be lost 8 .现在完成时态与一般过去时态的区别1一般过去时表示过去某时发生的动作或单纯表达过去的事情,强调动作;现在完成时为过去发生的,强调过去的事情对现在的影响,强调的是影响。I saw this film yesterday.(强调动作发生的时间是 yesterday o )I have seen this film.(强调对现在的影响,电影的内容已经知道了。)2一般过去时和表示过去的时间状语连用,如:ago, last week/. In 2008
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