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1、Present Perfect Tense,现在完成时,Have you ever read Little Woman?,I havent read it yet.,But I have had the book for ten years.,And I have kept it on my bookshelf(书架） since ten years ago.,Have you ever read Little Woman?,I havent read it yet.,But I have had the book for ten years.,And I have kept it on my
2、 bookshelf(书架） since ten years ago.,3.现在完成时的用法,2.一般疑问句及否定句的结构,1.现在完成时的构成,4. 时间状语,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,主语+havehas+动词过去分词,助动词：,talk - like - study - stop -,havehas,动词过去分词变化规则：,talked,liked,studied,stopped,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,Have/Has + 主语 + 动词过去分词,疑问式：,
3、I have finished my homework.,Have you finished your homework?,A: Have you surfed the internet (上网)? B: Yes, I have . I have surfed the internet. No, I havent. I havent surfed the internet.,talk on the phone for an hour,play soccer,eat (eaten) potato chips,see (seen) a tiger,2.一般疑问句及否定句的结构,3.现在完成时的用法
4、,1.现在完成时的构成,4. 时间状语,Have/Has + 主语 + 动词过去分词,否定式:,主语 + have/has + not + 动词过去分词.,疑问式：,We have visited the museum. (改为一般疑问句) 2)They have seen the film. (改为否定句) 3)He has returned the book. (对划线部分提问) 4)Jenny has had her lunch for three days. (改为一般疑问句并做否定回答),Have you visited the museum?,have not=havent,has
5、 not=hasnt,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,Have/Has + 主语 + 动词过去分词,否定式:,主语 + have/has + not + 动词过去分词.,疑问式：,We have visited the museum. (改为一般疑问句) They have seen the film. (改为否定句) 3)He has returned the book. (对划线部分提问) 4)Jenny has had her lunch for three days. (改为一般疑问句并做否定回答),They havent se
6、en the film.,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,Have/Has + 主语 + 动词过去分词,否定式:,主语 + have/has + not + 动词过去分词.,疑问式：,We have visited the museum. (改为一般疑问句) 2) They have seen the film. (改为否定句) He has returned the book. (对划线部分提问) 4)Jenny has had her lunch for three days. (改为一般疑问句并做否定回答),What has he
7、 returned?,2.一般疑问句及否定句的结构,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,Have/Has + 主语 + 动词过去分词,否定式:,主语 + have/has + not + 动词过去分词.,疑问式：,We have visited the museum. (改为一般疑问句) 2)They have seen the film. (改为否定句) 3)He has returned the book. (对划线部分提问) 4)Jenny has had her lunch for three days. (改为一般疑问句并做否定回
8、答),Has Jenny had her for three days?,No,she hasnt.,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,present(now),future,past,Mum, I have already(已经) cleaned them.,John, clean your teeth please.,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,1)过去发生或已经完成的某一动作对现在造成的影响或结果。,2)现在完成时表示从过去一直持续到现在的动作或状态。,Someone h
9、as broken the door. (窗户现在是坏的) I have already lost the key. (我现在没有钥匙) I havent read that book yet . (不了解书的内容) I have just cleaned my hands. (手是干净的),2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,1)过去发生或已经完成的某一动作对现在造成的影响或结果。,2)现在完成时表示从过去一直持续到现在的动作或状态。,She has learned English for 5 years. He has lived in
10、 Beijing since ( 自从)he was born . Have you stayed here since ( 自从) 3 oclock?,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,Have you ever read Little Woman?,I havent read it yet.,But I have had the book for ten years.,And I have kept it on my bookshelf(书架） since ten years ago.,3.现在完成时的用法,2.一般疑问句及否定句的结
11、构,1.现在完成时的构成,4. 时间状语,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,for+时间段,since+,Mr. Brown has had his TV _ 15 years. Ive taken driving lessons _ last month. My sister has had her cell phone _ a month . My friends havent visited me _ my birthday. We havent used our car _ a long time . She hasnt had
12、a good cup of coffee _years. Tom has worn glasses _ he was 7 years old.,for,for,for,for,since,since,since,时间点,句子,2.一般疑问句及否定句的结构,3.现在完成时的用法,1.现在完成时的构成,4. 时间状语,for+时间段,since+,时间点,句子,already(已经) yet(已经) just(刚刚) ever(曾经) never(从来没有） before（从前）,肯定句中,否定，疑问句末,肯定句中,肯定、否定句中,句中,句末,一般过去时与现在完成时之比较,1）一般过去时表示过去某
13、时发生的动作或单纯叙述过去的事情，强调动作，和现在不发生关系。而现在完成时表示过去发生的某一动作对现在造成的影响或结果，强调的是现在的情况。 2）一般过去时常与具体的时间状语连用，而现在完成时通常与模糊的时间状语连用，或无时间状语。, 一般过去时的时间状语有：yesterday, last week，ago, in1980, in October, just now,等具体的时间状语。 共同的时间状语有：this morning, tonight, this summer, before, already,等。 现在完成时的时间状语有：for, since, ever, never, just
14、, already, yet, in past years等不确定的时间状语。,请大家认真分析比较下列各例句：,I saw this film yesterday. （只说明动作发生在过去。） I have seen this film. （强调对现在的影响，电影的内容已经知道了。） She has returned from Paris. （她已从巴黎回来了。） She returned yesterday. （她是昨天回来的。） He has been in the League for three years. (在团内的状态可延续) He joined the League three
15、 years ago. ( 三年前入团，joined为短暂行为。) 注意：句子中如有一般过去时的时间副词（如 yesterday, last week, in 1960）时，不能使用现在完成时，要用过去时。例如： （错）Tom has written a letter to his parents last night. （对）Tom wrote a letter to his parents last night.,eat- see- read- keep- have- be- leave- make- go- meet- come- write- tell- buy- find- build-,built,found,told,come,gone,left,had,read,eaten,bought,written,met,made,been,kept,seen,1. I _(wait) for him for two hours . I am very angry . 2. He _ (be) a docto
