Unit 8 Have you read Treasure Island yet？现在完成时（课件）（共有PPT19张）

(共19张PPT)
初中英语人教版八年级下册
现在完成时
The present perfect tense
现在完成时
Back to
school
Back to
school
（有人刚把灯关了，对现在造成的影响是：现在很黑）
--It's so dark.
--Someone has turned off the light.
Back to
school
（我刚刚吃了午饭，对现在造成的影响是：现在很饱）
--Are you hungry
--No,I'm not.
I just have had lunch.
He is full .
Back to
school
（我已经学习英语五年了，学习英语从五年前延续到现在）
I have already learned English for five years
现在完成时：Present perfect tense
1.含义：
（1）表示过去发生的某一动作对现在造成的影响或结果。
（2）表示过去发生的动作，一直延续到现在甚至有可能继续延续下去.
现在完成时
Back to
school
主语+have/has + 动词的过去分词
2.构成
have/has在现在完成时中没有实际意义，只是助动词。
动词过去分词的规则变化与动词的过去式相同
I have finished my homework.
He has solved this problem.
3.现在完成时的标志词
Back to
school
1.I have already finished the work.
2.I haven't finished the work yet.
3.He has been here since 2009.
4.They have had this book for 2 months
________
_______
________
_____
标志词：already,yet,for,since,just，
in the past few years,so far,ever等




already “已经”，常用于肯定句中。一般置于助动词have/has之后，v.-ed 之前，但也可以放在句末。
yet 在现在完成时句型中常置于句末：
“已经”，常用在疑问句中,
2) “还，仍然”，常用于否定句和疑问句
与 already，yet 连用
现在完成时的基本句型
肯定句：主语 + have/ has + 过去分词+...
否定句:主语+haven't ( have not) +过去分词… 主语+hasn't ( has not ) +过去分词...
一般疑问句:Have / Has+主语+过去分词...
I haven’t finished my homework.
Have you finished your homework
I have finished my homework.
结构
练习1
He _______ in this factory for 20 years already.
A. will work B. works
C. has worked D. is working
Back to
school
解析：考查时态。already为现在完成时标志词,且 for + 时间段表明对现在的“影响”，故选用现在完成时结构have/has done。
练习2
—Is Richard still living here
—No, he ______ to Paris already.
A. had moved B. moved
C. will move D. has moved
解析：考查时态。No说明Richard不在此处，且already为完成时标志词，选用现在完成时结构have/has done。
练习3 句型转换。
1. He has already had breakfast. (改为否定句)
He ______ ____ breakfast ___.
2. I have done my homework already. (改为一般疑问句)
_____ _____ done your homework ____
3. The old man has lived here for forty years.(对画线部
分提问)
____ _____ ____ the old man _____ here
hasn’t had yet
Have you
How long has
lived
yet




Thank you!
Thank you!
PPT模板下载：www./moban/ 行业PPT模板：www./hangye/
节日PPT模板：www./jieri/ PPT素材下载：www./sucai/
PPT背景图片：www./beijing/ PPT图表下载：www./tubiao/
优秀PPT下载：www./xiazai/ PPT教程： www./powerpoint/
Word教程： www./word/ Excel教程：www./excel/
资料下载：www./ziliao/ PPT课件下载：www./kejian/
范文下载：www./fanwen/ 试卷下载：www./shiti/
教案下载：www./jiaoan/
How do I incorporate my logo to a slide that will apply to all the other slides
On the [View] menu, point to [Master], and then click [Slide Master] or [Notes Master]. Change images to the one you like, then it will apply to all the other slides.
Back to
school
Chapter 2
How do I incorporate my logo to a slide that will apply to all the other slides
ThemeGallery is a Design Digital Content & Contents mall developed by Guild Design Inc.
Back to
school
ThemeGallery is a Design Digital Content & Contents mall developed by Guild Design Inc.
Text in here
ThemeGallery is a Design Digital Content & Contents mall developed by Guild Design Inc.
Text in here
ThemeGallery is a Design Digital Content & Contents mall developed by Guild Design Inc.
Text in here
ThemeGallery is a Design Digital Content & Contents mall developed by Guild Design Inc.
ThemeGallery is a Design Digital Content & Contents mall developed by Guild Design Inc. ThemeGallery is a Design Digital Content & Contents mall developed by Guild Design Inc.
ThemeGallery is a Design Digital Content & Contents mall developed by Guild Design Inc.
Back to
school
Thank you!
Thank you!
PPT模板下载：www./moban/ 行业PPT模板：www./hangye/
节日PPT模板：www./jieri/ PPT素材下载：www./sucai/
PPT背景图片：www./beijing/ PPT图表下载：www./tubiao/
优秀PPT下载：www./xiazai/ PPT教程： www./powerpoint/
Word教程： www./word/ Excel教程：www./excel/
资料下载：www./ziliao/ PPT课件下载：www./kejian/
范文下载：www./fanwen/ 试卷下载：www./shiti/
教案下载：www./jiaoan/