八年級英語下冊 Unit 1 Past and Present Grammar 2課件

1、Unit1 Friends【Grammar】Present perfect tenseLearning aims1.掌握現(xiàn)在完成時的基本結(jié)構(gòu)、基本用法和動詞過去分詞的變化規(guī)律。2.理解并運用常和現(xiàn)在完成時連用的時間表達方式。3.能夠在語境中正確運用現(xiàn)在完成時。Guide One1.Read the following sentences.(2(1).Ive lived here since I was born.(2).Have you ever moved house?(3).Has the town changed a lot over the years?(4).The governme

2、nt has turned part of the town centre into a new park.(5).However, most of my old friends have moved away.(6).It has become impossible for us to see each other as often as before.(7).Weve lived in this area since then.(8).Have you seen my food?Think?(41.以上的句子都用了_.句子中的_ 和_由主語確定。謂語動詞用_.它的結(jié)構(gòu)是_.現(xiàn)在完成時hav

3、ehas過去分詞have/has+動詞的過去分詞2.判斷句中時態(tài)是一般過去時還是現(xiàn)在完成時。(3(1).He went to the cinema last night.(2).He has already seen many great films.(3).Marry has forgotten to do her homework.(4).They have been in Hong Kong since 1998.(5).We joined the drama club two years ago.3.理解現(xiàn)在完成時，給其定義.pastpresentEddie has lived wit

4、h Millie since he was born.Eddie has lived with Millie for four years.pastpresent4 yearsEddie was born four years ago.(1).Read the following sentences and understand the meaning of the present perfect tense.I have lived here since I was born.Eddie has just eaten Hobos food.I have already read this b

5、ook many times.表示從過去開始一直持續(xù)到現(xiàn)在的動作或狀態(tài)。表示過去發(fā)生，并對現(xiàn)在有一定影響的動作。表示某事直到現(xiàn)在發(fā)生了許多次?，F(xiàn)在完成時的含義現(xiàn)在完成時用來表示之前已發(fā)生或完成的動作或狀態(tài)，其結(jié)果和現(xiàn)在有聯(lián)系，動作或狀態(tài)發(fā)生在過去但它的影響現(xiàn)在還存在；也可表示持續(xù)到現(xiàn)在的動作或狀態(tài)。The Present Perfect Tense (現(xiàn)在完成時）Guide Two1.參閱P13和P122-123快速寫出下列動詞的過去式和過去分詞。(4Have a match. Who writes best?be_ _ eat_ _see_ _ change_ _move_ _ live_

6、_get_ _ become_ _forget_ _ marry_ _stop_ _ teach_ _come_ _ have_ _動詞的過去分詞變化規(guī)則可參閱動詞的過去式變化規(guī)則2.Finish Part A on Page 14.(3Part Aborrowed/hoped/made/got/planned/cried/sent/watched/said/grown/hit/enjoyedGuide Three1.Read the context in the form on Page12 and finish the following blanks.(4(1).主語是_ _ _ _時，

7、用have主語是_ _ _時，用has(2).肯定句_ 否定句_一般疑問句_句中的have/has可看做助動詞使用，have/has可直接在后面加_表否定，have not=_,has not_; have/has也可直接_表疑問。2.Change them according to the requirements.(4(1).Have you ever moved house?(否定回答)(2).Has the town changed a lot over the years?(肯定句)(3).The government has turned part of the town cent

8、re into a new park.(一般疑問句,并作出肯定回答)(4).Most of my old friends have moved away.(否定句)3.Complete the sentences using the present perfect tense. They _(finish) their homework.2. Mr and Mrs Li _ (not come) back yet.3. John _(play) this computer game a few times.havent comehave finishedhas played4. We _(no

9、t see) that film yet.5. Mr Dong _(repair) over ten bicycles since last Monday.6. You _(not visit) me for a long time.havent seenhas repairedhavent visitedComplete the conversation using the correct forms of the verbs in brackets.Millie: (1)_ you _(see) any exhibitions recently, Sandy?Sandy: No, I (2

10、)_. What about you?Millie: Well, I (3)_(see) one. I saw it at the history museum last week.Sandy: Whats it about?Have seen have seenhaventMillie: I (4)_(forget) the title. Its about changes in Beijing over the past century.Sandy: Oh, yes. I (5)_(hear) about it.(6)_ your cousin _(go) with you?Millie:

11、 No, he (7)_. He (8)_ (be) very busy this week.have forgottenhave heardHave gonehasnthas beenThink?如何識別運用現(xiàn)在完成時？現(xiàn)在完成時有一些時間標志詞：already/yet/ever/for/just/never/recentlysince/yetHow to use them?already肯定句，表示已經(jīng)發(fā)生的事ever疑問句，表示“曾經(jīng)”for肯定句/否定句/疑問句，表示一段時間just肯定句，表示“剛剛”never否定句，表示 “從不”recently肯定句/否定句/疑問句，表示 “最近

12、”since肯定句/否定句/疑問句，表示 “自以后”yet疑問句/否定句,表示 “已經(jīng)” 或 “還沒有”Practice選擇正確的詞填空（2(1).I_come back from the supermarket. (for/just/since)(2).I have_ been to Chengdu. (for/never/yet)(3).He has worked there _ he left school. (already/just/since)(4).She has known Sam_ nine years. (for/never/since)(5).Have you_ ridden a horse? (ever/for/yet)Practice in class(10Finish Part B C