英语人教版八年级下册现在完成时精品ppt课件.ppt
《英语人教版八年级下册现在完成时精品ppt课件.ppt》由会员分享,可在线阅读,更多相关《英语人教版八年级下册现在完成时精品ppt课件.ppt(27页珍藏版)》请在三一办公上搜索。
1、Present Perfect Tense,Present 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,1.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. ),present,past,I have lived here for two years,I lived there 2
2、 years ago,常用于现在完成时的时间副词,介词:already (已经): 用于肯定句 yet(已经): 用于否定句一般疑问(句末) just (谓语动词之前) (刚刚), ever(曾经) 疑问句) never(从不) I have never seen him .before(以前) Have you seen the film before?in /duringthe past several days / weeks/ years(在过去的)recently(最近) I have not written to my parents recently.so farby now (
3、到目前为止) So far she has learned 5 English songs.by now (so far),up to now(到目前为止) all ones life , once, twice, this morning/month/year(今天早上/这个月/今年),Exercises,1. I _(have) lunch already.2. Has the train_ (arrive), yet?3.Tome _ never_ (be to ) China.4. The twin _just _(see) my father.5. The twins _(see)
4、my father just now.6. Many tall buildings _(build) in the past 5 years.,have had,arrived,has,been to,has,seen,saw,have been built,用法二:,表示过去已经开始,持续到现在的动作或状态,也可以表示一直持续到现在并可能还将持续下去。A 动词使用延续性动词。B 和表时间段的时间状语连用。常与for或since引导的时间连用so far, up to/till now, in the last/past+一段时间,all ones life, by now, these da
5、ys、for two years、since 1984、since he came here I havent seen her these days. She has learnt English for 3 years/since 3 years ago. They have lived here since 1990. What has happened to the USA in the last 350 years?,注意:(1)since一段时间agofor时间段; since two weeks ago=for two weeks; I have kept the library
6、 book for a week.= I have kept the library book since a week ago. (2)since + 时间点for时间段 since 2000=for years(3) since+从句(常用一般过去时) The Greens have lived in Beijing since they moved to Beijing from Paris(4)It is /has been +一段时间 + since 从句. 自从某事发生已有一段时间了. It is /has been two years since my brother joine
7、d the army.,for和since的运用for “经历(时间段)” since “自从以来” for时间段 since时间段 ago since时间点 since从句,1.Hehasstayedherefor3hours.2.Hehasstayedheresince3hoursago.3.Hehasstayedheresince3oclock.4.HehastaughtEnglishsincehecamehere.,练一练:用for和since填空。,_three hours_three oclock_two days_yesterday afternoon_I came here_l
8、ast Sunday,_a week_a long time_1997 _two weeks_three years ago _ last month,for,since,for,since,since,since,for,for,since,for,since,since,用for 或since填空。1. Jill has been in Ireland_Monday.2. Jill has been in Ireland_three days.3. My aunt has lived in Australia_15 days.4. Margaret is in her office. Sh
9、e has been there_7 oclock.5. India has been an independent country_1974.6. The bus is late. Weve been waiting_20 minutes.7. Nobody lives in those houses. They have been empty many years.8. Mike has been ill_a long time. He has been in hospital _October9. Its ten years _ we met each other last time.
10、10. He has taught English _ 25 years. 11. The Greens have lived on the farm _ 1990. 12. They have been practicing the guitar _ two hours. 13.How long have you been a reporter? _ 8 years ago. 14. I havent gone for a walk in the park _ a long time. 15. Hes been collecting stamps _ he was in primary sc
11、hool. 16. Peter has been to summer camp _ 3 times.,注意点一:since 的用法1. +具体的过去时间 since 2008 since since last Sunday +ago since two years ago +句子(过去时)2. It is /has been +一段时间 + since 从句.(自从某事发生已有一段时间了.)It is /has been two years since my brother joined the army.,实义动词分为: 1) 瞬间动词 2)延续动词,瞬间动词,注意: 瞬间动词不能和时间段连
12、用.,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 get out close wake upgo to sleepbecome interested in,be in,be dead,have,keep,be away / be out,be a,be in/a member of,be open,be on,be over,have a cold,be up,know,
13、be out,be closed,be awake,be asleep/ sleep,be interested in,巧记瞬间性动词的转换 “开始离去借来还, 出生入死买到家,穿衣入睡要感冒, 开开关关变结束。”,结束性动词转换为以下延续性动词或者表示可以延续的状态的短语 arrive at / in sp / get to / reach sp / come / go / move to sp be in sp / at school / at home / on the farm / be here / be thereHe got to Beijing five minutes ago
14、.He Beijing for .2) I moved to the USA in 2008. I the USA since .3) I went home yesterday. I home for .4)They came here last week. They _ here since _. come to / go back to / return to be back to go out be outHe came out two years ago.He _ for _.2) We return to Beijing yesterday.We _ _ to Beijing si
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 英语 人教版八 年级 下册 现在完成时 精品 ppt 课件
![提示](https://www.31ppt.com/images/bang_tan.gif)
链接地址:https://www.31ppt.com/p-1900845.html