人教版八下-Unit 8 Have you read Treasure Island yet -Section A Grammar focus 4a—4c-教案、教学设计-市级优课-(配套课件编号：456af).doc

1、Unit8 have you read Treasure Island yet? Grammar focus_The Present Perfect Tense 教学目标：了解并掌握现在完成时的基本句型结构。 教学重、难点: 1.has1.has gonegone (to),has(to),has beenbeen (to),(to), hashas beenbeen (in)(in) 的区别的区别 2.For2.For 与与 sincesince 用法区别用法区别 3.短暂性动词与延续性动词的转换 教学方法：讲解法、练习法 教具准备：PPT 教学过程： Step1.Lead-in Winte

2、rWinter hashas alreadyalready e. WillWill itit stillstill bebe farfar inin spring?spring?冬天来了，春天还会远吗？冬天来了，春天还会远吗？ Step 2.Teaching New Language 一 基本结构：基本结构：助动词助动词 have/has+have/has+过去分词过去分词(done)(done) 二句型：句型：肯定句：肯定句：主语主语+have/has+have/has+过去分词过去分词+ +其他其他 否定句否定句：主语+have/has+not+过去分词+其他. 一般疑问句一般疑问句： H

3、ave/Has+主语+过去分词+其他. 简略答语简略答语: : .(.(肯定肯定) )Yes,Yes, 主语主语 + + have/has.have/has. .(.(否定否定) )No,No, 主语主语 + + havent/hasnt.havent/hasnt. 三、现在完成时现在完成时 用法用法 （1 1）现在完成时表示过去发生或已经完成的动作对现在造成的影）现在完成时表示过去发生或已经完成的动作对现在造成的影 响或结果响或结果 MyMy fatherfather hashas gonegone toto work.(work.(含义是含义是: :我爸爸现在不在这儿我爸爸现在不在这儿)

4、) GuoGuo XiaoxiaoXiaoxiao hashas (just/already)(just/already) comecome. . ( (含义：郭晓晓现在在这含义：郭晓晓现在在这 儿儿) ) I I havehave spentspent allall ofof mymy moneymoney (so(so far).(far).(含义是含义是: :现在我没有钱了现在我没有钱了.).) （2 2）现在完成时可以用来表示发生在过去某一时刻的现在完成时可以用来表示发生在过去某一时刻的, ,持续到现在持续到现在 的动作（用行为动词表示）或状态（的动作（用行为动词表示）或状态（bebe

5、 动词表示）常与动词表示）常与 forfor（+ + 时间段）时间段）,since,since（+ +时间点或过去时的句子）连用时间点或过去时的句子）连用. . 练习一练习一： 1.Zhao lan _already_ in this school for two years. A. was; studyingB. will; studyC.has; studiedD.are studying 2.Hurry up！ The play _ for ten minutes. A. has begunB. had begunC. has been onD. began 3.Do you know

6、him well ？ Sure.We _ friends since ten years ago. A. wereB. have beenC. have becomeD. have made 四现在完成时的标志四现在完成时的标志1.1.以以 already,already, justjust 和和 yetyet 为标志为标志 2.2.以以 everever 和和 nevernever 为标志为标志 3.3.以动作发生的次数为标志以动作发生的次数为标志 4.4.以以 soso farfar（到目前为止）和和 beforebefore 为标志为标志 5.for+5.for+时间段时间段 和和 si

7、nce+since+过去时间点（过去过去时间点（过去 从句）为标志从句）为标志 练习二练习二: : 4、Have you met Mr Li _ A. justB. agoC.beforeD. a moment ago 5、Our country _ a lot so far. Yes. I hope it will be even _. A. has changed ； wellB. changed ； good C. has changed ； betterD. changed ； better 6、He has _ been to Shanghai， has he ？ A. alread

8、yB.neverC.everD. still 注意一注意一：hashas gonegone (to),has(to),has beenbeen (to),(to), hashas beenbeen (in)(in) 的区的区别别 Have/Has gone(to) :去了(现在不在说话现场) Where is your father？He has gone to Shanghai. Have/Has been (to) :去过（已不在去过的地方） My father has been to Shanghai for two months. /since two months ago. Have

9、/has been in：呆了多久（还在所呆的地方） My father has been in Shanghai for two months. /since two months ago. 练习三练习三 7.These farmers have been to the United States. Really ？ When _ there ？ A. will they goB. did they go C. do they goD. have they gone 8.How long have you _ here？ About two months. A. beenB. goneC.

10、comeD. arrived 9.Miss Green isnt in the office . she_ to the library. A.has goneB. wentC.will goD. has been 注意二注意二：ForFor 与与 sincesince 用法区别用法区别 for+时间段 He has stayed here for five years. since+时间点（译为：自从以来） He has stayed here since 5 oclock. since+时段+ago He has stayed here since five years ago. sinc

11、e+从句（过去时） He has stayed here since he came here. It is+时段+since+从句（过去时） It is five years since he came here. 6、时段+has passed +since+从句 Five years has passed since he came here. 练习四练习四 10.It _ ten years since he left the army. A. isB. hasC. willD. was 11.Hurry up！ The play _ for ten minutes. A. has b

12、egunB. had begunC. has been onD. began 12._has Mr White been a member of Greener China since he _ to China？ A. How soon， comesB. How often， got C. How long， cameD. How far， arrived 注意三：短暂性动词与延续性动词的转换 1、直接转化 buy-haveborrow-keep catch a cold-have a cold 2、转化成 be+名词 join the army-beasoldier jointhePart

13、y-be a Party member go to school -be a student 3 3、转化成、转化成 be+be+形容词形容词/ /副词副词 come/become-beinfinish-beover leave-beawaydie-bedead open-be openclose-beclosed fall asleep -beasleep 4、转化成 be + 介词短语 go to school-be in school join the army-be in thearmy 练习五练习五 13. His uncle _ for more than 9 years. A.

14、has come hereB. has started to work C. has lived thereD. has left the university 14.This factory opened twenty years ago.（同义句转换） This factory _ _ _ for twenty years. 15.Miss Gao left an hour ago. （同义句转换） Miss Gao _ _ _ _ an hour ago. 中考链接：中考链接： 1. （2016湖北荆门， 30） Areyougoing towatch“Running Man” toni

15、ght? _ No! I_ it with my parents only once.I dont think it s exciting. A. seeB. have seenC. will seeD. amseeing 2.(2016 上海，39） This medicine_ millions of peoples lives since it was put into use. A.is saving B. will save C. has saved D. had saved 3.(2016合肥高新区二模，43）Dont worry ! Your backpack alreadly _ and now you can take it and enjoy shopping with your classmates. _Thanks Mom. A.will cleanB.has cleaned C.will be cleanedD.has been cleaned Homework:Homework: 1.ReviewThe Present Perfect Tense. 2.Finish the exercises. 3.Preview the new lesson.