1、Winter has already come.Can spring be far behind?冬天来了，春天还会远吗？冬天来了，春天还会远吗？.I have taught English since 2006.I have lived in Chaozhou for 28 years.I have been to many places,such as Guangzhou.I have never been to Zhaoqing before.They have swept the floor already.They have already cleaned the windows.T
2、hey have cleaned the blackboard.Usage 1（用法）用法）1）现在完成时态表示现在完成时态表示_发生的动作对发生的动作对_造成的造成的_或或_。e.g.They have cleaned the classroom already.(Now the classroom is clean.)2)Adverbials of time （时间状语）（时间状语）yet ever never just beforehave/has +P.P.(过去分词过去分词)过去过去现在现在影响影响结果结果alreadyStructure（结构）结构）playlivestudysto
3、pneedvisitplanteatplayed livedstudiedstoppedneededvisitedplantedgogivesingtakeseeruncomespeakgonegivenseentakeneatenspokenruncomesung/d/d/d/t/id/id/id/irregular verb不规则动词不规则动词regular verb规则动词规则动词1.V+ed2.不发音不发音e结尾结尾+d3.辅音字母辅音字母+y 改改y为为i+ed 4.双写辅音字母双写辅音字母+ed1.Both his parents look sad.Maybe they _(kno
4、w)whats happened to him.2.I_(have)my lunch and Im not hungry now.3.We cant find him anywhere.Perhaps he _ _(go)home.4.They_(study)the word “exam”already,and now they can use it!5.Have you finished your work _?-Yes,I have _ done it.(already/yet)环保加油站环保加油站have knownhave hadhasgonehave studiedyetalread
5、y重逢重逢Have you ever heard the song?Sunday November 28th,2010 Sunny How beautiful Guangzhou is!Guangzhou has changed greatly since it bid for(申办申办)the 16th Asian Games.People have planted a lot of trees.Also they have taken good care of them since then.So far,the river has been clear with the help of
6、the government.It has been safe to drive on the road since Guangzhou held the Asian Games.In the last few years,the environment of Guangzhou has improved a lot.I enjoyed my days in Guangzhou,and I am looking forward to visiting Guangzhou again.Task 1:Underline the changes.Task 2:Circle the adverbial
7、s of time(时间状语时间状语).现在完成时表示现在完成时表示_发生的动作或状态，持续到发生的动作或状态，持续到_,也许还会也许还会_下去。下去。过去过去现在现在持续持续The Asian Games has been over for three weeks.I have been away from Guangzhou for three weeks.I have left Guangzhou for three weeks.I have had some souvenirs for three weeks.I have bought some souvenirs for three
8、 weeks.be in be deadhavekeepbe awaybe openbe onbe closed瞬间动词与延续性动词的转换瞬间动词与延续性动词的转换be overbe asleepbe a member of/be inbecome/come/go die borrow leavebuy joinstart/begin finish/endclose openfall asleep 1.Michael has left Guangzhou for 3 days.2.The football match has begun since 8:00a.m.3.How long hav
9、e you bought the car?4.They have gone to Zhongshan twice.5.Jane has fallen asleep since I come back home.6.I have lived in America for two years ago.大家来找茬大家来找茬been away frombeen onhadbeenbeencamesinceago_ _for three dayssince eight since two weeks agosince I came back home.since+for+_时间点时间点时间段时间段+ag
10、o 从句从句(一般过去时）一般过去时）Usage 2（用法）（用法）1)现在完成时表示现在完成时表示_发生的动作或状态，持发生的动作或状态，持续到续到_,也许还会也许还会_下去。下去。过去过去现在现在持续持续时间段时间段（注意：句中谓语动词要用延续性动词注意：句中谓语动词要用延续性动词）since then/so far/in the last few years2)Adverbials of time(时间状语）时间状语）Information CardIn the past,1.people _ litter everywhere.2.they _ a lot of paper.Since
11、 several years ago,So far,1.they _ both sides of paper.2.students _ many old books away to the Project Hope.threwwastedhave usedhave givenSum up（1）一般过去时只表示）一般过去时只表示_的动作或状态，的动作或状态，和和_不发生关系。与表示过去的时间状语连不发生关系。与表示过去的时间状语连用，如用，如 in the past,yesterday,last year,two hours ago,just now 等。等。（2）现在完成时表示）现在完成时表示
12、_发生的动作对发生的动作对_造成造成的影响。的影响。_与过去的时间状语连用，时间状语往往是与过去的时间状语连用，时间状语往往是since,for,just,already,yet,before,so far等。等。过去过去现在现在过去过去现在现在不能不能3.Tell the differences一般过去时与现在完成时一般过去时与现在完成时What have we reviewed?1.Structure have/has+P.P.2.Usage 过去对现在过去对现在(瞬间动词瞬间动词)already/yet/ever/never/just/before 过去到现在过去到现在(延续性动词延续性
13、动词)for/since/so far/since then/in the last few years plant treeswalkWhoHave/Has done Adverbials of timeIStudent 1Student 2Student 3collect old booksuse paper bagsReport:I have planted a lot of trees already.Lily hasnt gone to school by bus for a long time.She has walked to school since she became a
14、middle school student.Lucy has We will keep doing them in the future.plant treeswalkcollect old booksuse paper bags环保小卫士环保小卫士Its our duty to protect the environment.Level 1.Recite the past participle.(过去分词过去分词)Level 2.Choose the best answer.Level 3.Writing Make Zhaoqing More BeautifulChoose the home
15、work according to your levels.Make Zhaoqing More Beautiful 环境保护是个世界性的话题，它需要每个人的努力。你已经做环境保护是个世界性的话题，它需要每个人的努力。你已经做了哪些事情来保护肇庆的环境？请写一篇小短文。了哪些事情来保护肇庆的环境？请写一篇小短文。80词左右。词左右。温馨提示温馨提示【文章主题文章主题】谈论你已经做了哪些事来保护肇庆的环境。谈论你已经做了哪些事来保护肇庆的环境。【谋篇布局谋篇布局】本文可以从下三个方面来构思：本文可以从下三个方面来构思：（1）保护环境很重要，是我们每个人的职责。（）保护环境很重要，是我们每个人的职责。（2）你已经做了哪）你已经做了哪些事情来保护肇庆的环境。些事情来保护肇庆的环境。（3）号召大家应该保护环境。）号召大家应该保护环境。【遣词造句遣词造句】本篇习作会用到哪些词句呢？请仔细想想。本篇习作会用到哪些词句呢？请仔细想想。短语：短语：protect the environment its our duty to句子：句子：Pollution has become a serious problem.All the flowers,grass and fish have gone!I have planted a lot of trees.
