英语人教版八年级下册现在完成时复习.pptx

1、现在完成时态的复习,unit8 -unit10,现在完成时谓语动词的构成:,主语+ have /has+ Vp.p(过去分词) 1. I _ _ _ (finish) homework already. 2.He _ (learn) English for three years.,have finished,has learned,句式变换,1 He has finished his homework.(变为否定句) 2 They have visited China before (变为一般疑问句，并做肯定回答),He hasnt finished his homework.,Have t

2、hey visited China before? Yes,they have.,想一想,1 .现在完成时的第一种用法是什么？ 2.常用的时间状语有哪些？ 3.你能说出already和yet 有哪些不同吗？,表示过去发生的动作对现在造成的影响和结果,时间状语： already，yet ,ever ,never,just ,before等,注意：如果肯定句中含有already 和just ,在变成否定句或疑问句时，要把already 和just 转换成yet.,用动词适当形式填空：,1 I_(do) my home work already. 2 He _(not finish) his hom

3、ework yet. 3 We_never_(see) this book before. 4 Mother _just_(clean) the house. 5Sally _(visit) China before.,用动词适当形式填空：,1 I have done (do) my home work already. 2 He hasnt finished (not finish) his homework yet. 3 We have never seen (see) this book before. 4 Mother has just cleaned (clean) the hous

4、e. 5Sally has visited (visit) China before.,现在完成时（二）,1现在完成时的第二种用法是什么？ 2常用的时间状语有哪些 3for和since用法有什么不同？,现在完成时（二）,1 表示动作从过去发生，一直延续到现在，并且有可能继续延续下去 2时间状语 通常和for ,since 引导的时间状语连用。 for +一段时间，for a week,for 3years, for along time since +时间点，since 2 oclock， since yesterday,since 5 years ago, since+从句 , since

5、I came here等,注意：对for或since引导的时间状语提问必须用how long,1 I have lived here for 10 years. How long have you lived here? 2 She has stood here since 2 hours ago. How long has she stood here ?,选用since 和for填空,1 W e havent seen each other _a long time . 2 His father has been in the party _10 years ago. 3 The film

6、 has been on _20 minutes. 4 Mr Green has worked here _he came to China 5 His grandfather has been dead _ two years.,选用since 和for填空,1 W e havent seen each other fora long time . 2 His father has been in the party _since 10 years ago. 3 The film has been on for20 minutes. 4 Mr Green has worked here si

7、ncehe came to China 5 His grandfather has been dead for two years.,have been to 与 have gone to 区别,have been to 曾经去过某地（已经回来） have gone to 去了某地（还没回来）,True or false ?,1 I have gone to Japan before ( ) 2 Guilin is very beautiful,I have been to there twice.( ) 3 His father has gone to Beijing .He will be

8、 back next week ( ) 4 where have you gone（）,True or false ?,1 I have gone to Japan before ( F) been 2 Guilin is very beautiful,I have been to there twice.(F) 3 His father has gone to Beijing .He will be back next week (T) 4 where have you gone（F） been,你能说出一般过去时与现在完成时的区别吗？,一般过去时与现在完成时有一些明显的时间状语。 1 ye

9、sterday,last year ,in +过去某一年，two years ago，just now等常 用于一般过去时。 2 already，yet ,never ,ever ,just ,before,so far ,in thepast/lastyears, for +时间段，since +时间点等常用与现在完成时。,注意：在现在完成时的肯定句中，非延续性动词不能和for，since引导的时间状语连用，必须改成延续性动词。,最常见的有： buy- have borrow - keep leave- be away die - - be dead come/go/arrive- be h

10、ere /be in begin/start- be on join- be in /be a member of,当堂检测,一 句式变换： 1. Jack has visited China before.(改为否定句) Jack _ visited China before. 2 .They have come into the classroom.(改为一般疑问句) _ _ come into the classroom? 3.He has been here for 12 years (划线提问) _ _ has he been here ?,has not,Have they,How long,二、 用所给词的正确形式填空,1 I _ (live ) here for ten years. 2 I_(live) here in 1998. 3 He _( not return ) the book yet