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1、空白演示,外研版英语八年级下语法专项复习现在完成时M2M4,外研版英语八年级下语法专项复习现在完成时M2M4课件,外研版英语八年级下语法专项复习现在完成时M2M4课件,空白演示,1.I finished my homework just now.我刚刚完成了我的作业。I have just finished my homework.我刚刚把作业完成了。（现在没有作业了）一、现在完成时的概念 表示在以前某个时间已经发生的行为或曾经做过的事情对目前有某种影响。我们用现在完成时来表示。,空白演示,2.She has been to many interesting places. 她已经去过许多有趣
2、的地方。Ive also entered lots of speaking competitions. 我也已经参加了许多的演讲比赛。They havent discovered life on Mars yet. 他们还没有在火星上发现生命。Have you ever won any prizes before?-Yes,I have./No,I havent. 你以前曾获过奖吗？-是的。/不，没有。二、现在完成时的结构 以上句子的有一个共同的特点，就是都有“have/has+动词过去分词”，这就是现在完成时的结构，现在完成时的一般疑问句，是把have/has提至句首，句末加“？”。否定回答
3、在have/has后加not。,空白演示,小试牛刀,（1）Astronauts _ _ to the moon.(宇航员已经去过月球了。）（2）I _ _ the project yet because Im not sure how to make it.(我还没开始这个项目，因为我还不确定怎么做。）（3）Have you ever had a Western meal?(根据实际情况回答，做完整回答句子）（4）Anna _ me for many years.A.havent see B.havent seen C.hasnt see D.hasnt seen（5）I love Jiaxi
4、ng.I _ （be）there for four times.(用所给词的适当形式填空）,have been,havent started,D,have been,空白演示,3.I have just heard the news. 我刚刚听到消息。Ive already bought the book. 我已经买了这本书。He hasnt cleaned the house yet. 他还没有打扫屋子。三、标志现在完成时的时间状语 我们常常通过一些具有显著特点的时间状语来判断时态，现在完成也不例外。常见的时间状语有just，already，yet（用于疑问句和否定句），never，ever
5、，before，so far等。【练习】()Have you finished your work _？Yes, Ive _ finished it.Aalready; yet Byet; alreadyCyet; yet Dalready; already,B,空白演示,4.The spaceship has gone into space. It wont return.宇宙飞船已经进入太空，不会回来了。I have been to Mount Tai twice.我去过泰山两次了。四、在现在完成时态中，要注意have been to和have gone to的区别，前者表示“去过某地”，
6、但现在已经回来了；后者表示“去了某地”，现在还没回来。【练习】()2015铜仁Where is your mother? She _ Guiyang. Ahas gone to Bhas been to Chas been in Dwent to,A,空白演示,5.I have just been to London.I went there last month. 我刚去过伦敦，是上个月去的。I have already finished my homework.I finished it an hour ago. 我已经写完作业了。我是一个小时前写完的。五、现在完成时与一般过去时的区别（1
7、）虽然这两个时态都和过去发生的事有关，但是现在完成时强调这一动作与现在的关系，如对现在产生的结果、影响等，而一般过去时只表示过去的事实，不表示和现在的关系。现在完成时的基本用法：表示迄今为止的经历，也许发生过一次，也许多次，成为一种经验。如：I have never seen the sea.(我从未见过大海从出生到现在我没有见过大海）表示过去发生的动作或刚刚完成的动作对现在的影响。如：I have just cleaned the kitchen.(我刚刚把厨房打扫干净厨房现在是干净的）I have kept this book for two weeks.（这本书我已经借了两个星期动作持续
8、到现在已经两周，或许还将继续）【练习】()Do you know the boy over there?Sure. I_ him for years.Aknew Bwill knowChave known Dknown,C,空白演示,（2）在没有明确的过去时间状语时，如何判断该用现在完成时还是一般过去时呢？判断的标准是看该行为是否对现在有影响，也就是说该句所强调的是什么。如：-Where have you put my book？-I put it on your desk,but I dont know why it is not there now.(你把我的书放在哪儿了？我放在你的桌子上
9、了，可我不知道为什么现在书不在那儿了。）该例中当前者问对方把自己书放在何处时，是想知道书现在在什么地方，他感兴趣的是现在的结果，因此用现在完成时。但是后者回答时清楚地说不知道为什么书不在自己放的地方，由此来看，说把书放在课桌上只是说明当时放的位置，并不强调对现在的影响，故用一般过去时。再看一组例句：-Have another piece,please.-Thank you.I have had enough.(再来一块儿吧。谢谢。我已经饱了。）这组例句中的现在完成时表示对结果的强调，即吃饱了，所以不想再吃了。【练习】()My grandmother _ in Yangzhou. She was
10、 born there and has never lived anywhere else.Alived Blives Cwas living Dhas lived,B,空白演示,6.I have lived in Hebei for ten years. 我在河北已经住了十年。He has been in this school since 2000. 自从2000年起，他就在这所学校了。How long have you studied English?你学英语学了多长时间了？For four years. 四年了。六、如果要表达某一行为或状态从过去某时间一直持续到现在，则要用现在完成时态
11、。这时，句子通常要与表示一段时间的时间状语连用，这类状语通常由for或since来引导。需要注意的是，for后面接一段时间，而 since 后面接时间点或过去时态的句子，即 for 用来说明动作延续的时间长度，since用来说明动作的起始时间。如果要对现在完成时态句子中的时间状语进行提问，通常要用 how long。【练习】()2015昆明Long time no see! Oh! It_ five years since we met last time.Awas Bwere Chas been Dhave been,C,空白演示,7.在现在完成时态的句子中，短暂性动词一般不能与时间段连用，
12、但在否定句中，则一般可以和表示一段时间的for短语连用。例如：I have stayed in the hotel for a week.（我已经在这家宾馆待了一周了。）My parents havent seen me for two years.（我父母有两年没见我了。）He hasnt come to school for a week.（他一周没来上学了。）注意 短暂性动词不能和表示一段时间的时间状语连用，但如果要保留表示一段时间的时间状语，必须将短暂性动词改为延续性动词。常见的短暂性动词转换为延续性动词如下：(1)fall asleepbe asleep (2)begin/start
13、be on(3)buyhave(4)diebe dead (5)comebe in(6)arrivebe here(7)joinbe in/be a member of(8)finish/endbe over(9)leavebe away(10)borrowkeep(11)come backbe back【练习】()Look at these stamps. I _ them for five years.Wow, they are wonderful.Akept Bhave kept Chave bought Dbought,B,空白演示,*8.现在完成时态还经常用于“Its the fir
14、st/secondtime that”结构中。例如：Its the first time that I have visited here.（这是我第一次参观这里。）It will be the third time that you have seen the film with me.（这将是你第三次和我一起看电影。）【练习】( )-Its the second time that I _ this book.A.read B.have read C.has read D.reading,B,空白演示,课堂检测,一、选择正确选项1.()Hasnt Betty come yet?No, an
15、d I_ for her for nearly two hours.Await Bwaited Chave waited Dhad waited2.( )I have _ my homework so I can play with my friends.A . do B . doing C . did D . done3.()Where is your father?He _ Dalian.A. have gone to B. has gone to C. have been to D. has been to4.() Aunt Wang is not here now. She has _
16、 to Shanghai and will stay there for several months.A. got B. come C. been D. gone5.()Are you a soccer player in your school?Yes, I _ the team two years ago and I_ in the team for two years.A.have joined; have been Bwas joined; am Cjoined; was Djoined; have been,C,D,B,D,D,空白演示,二、用所给词的适当形式填空6.Mum, ca
17、n I watch TV now? I _ (finish) my homework.7.The boys _ (not read) the interesting books yet. Their mother will buy some for them.8._ you ever _ (eat) the pizza?No, I havent.9.Her grandpa _ (die) when she was 20.10.So far I _(be) to many places in China.三、按要求完成下列各题11.My parents have gone to England(
18、对画线部分提问)_ parents gone?12.Daming has climbed Mount Tai before.(改为一般疑问句并作否定回答) _ Daming _Mount Tai before? _， he _13.He has waited for her for 2 hours(对画线部分提问)_he waited for her?14.Jane came to China two years ago. (改为同义句)Jane _ _ in China for two years.15.I have already finished my homework.(改为否定句)I
19、 _ _ my homework _,have finished,havent read,Have,eaten,died,have been,Where have your,Has,climbed,No,hasnt,How long has,has,been,havent finished,yet,空白演示,四、语法填空阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。 Justinisa16-year-oldboy.Heisthinkingabouthow_(spend)hismoneyduringwintervacation.He_(save)upabout300do
20、llarsalready.Heplanstobuy_computerwithhismoneybuthealsowantstogoskatingwithhisfriends.Hecantdoboth_hedoesnthaveenoughmoney.WhatshouldJustindo?Weareofteninthesekindsofsituations.Youwanttoseeaconcert_Saturday,butitisalsoyourmothersbirthdayandyoudonotwanttolet_(she)down.Inthiscase,youdonthaveenoughtime
21、togotoboth_(place).Youmustmakeadecision.Youmustthinkabout_shouldbedonefirst.Youmustconsiderthe followingquestions_(serious).Whichismoreimportant?Whichdecisionneedsmyattentionmore?Whichchoicewouldsatisfymemore?Afteryouveansweredthesequestions,itmaybemuch_(easy)foryoutodecidewhattodo.Sothenexttimeyoum
22、ustmakeadecision,remembertoprioritize(优先考虑).,to spend,has saved,a,because/as/since,on,her,places,which/what,seriously,easier,空白演示,五、修改作文原题呈现：请参考课本知识和下表提示，以“Space Travel”为题，写一篇80词左右的短文。,Recently scientists did many great things in space travel.They have sent a spaceship on Mars and the journey has ta
23、ken several months.Some astronauts was to the moon.But no one have been to Mars yet because Mars has been very far away,much far than the moon.So far,we havent discover life on Mars. Lots of scientists are working hard in order to send astronauts to Mars one day.Were sure one day someone will walk on Mars.,have done,have been,has,is,farther,discovered,空白演示,通过今天的学习你是不是对现在完成时态有更深的了解？那就证明这节课对你来说是有用的！继续努力吧！The End,亲爱的同学们，再见！,
