初中英語 滬教牛津版 8A U5-2 Grammar U5 Grammar課件

1、Present perfect tense8A U5 GRAMMAR南山外國語學(xué)校(集團)大沖學(xué)校 謝思儀SisleyLearning objectivesAfter this lesson, you will be able to:1. learn when to use present perfect tense.2. learn the structure of present perfect tense3. master the adverbs already,yet, ever and never4. apply present perfect tense to make up se

2、ntencesExperiencingPart 01Try EverythingLook how far youve come, you filled your heart with loveBaby youve done enough that cut your breathPRESENT PERFECT TENSE_When to use present perfect tense?_When to use present perfect tense?1) We use present perfect tense to talk about experiences. 談?wù)摻?jīng)歷Example

3、s I have been abroad two times. Anna has never broken a leg.When to use present perfect tense?2) We use present perfect tense to talk about an action which started in the past and continues up to now. 談?wù)撨^去開始并持續(xù)到現(xiàn)在的動作Examples I have been a teacher for about 3 years. We havent seen Jennie for two days

4、.nowfuturepastWhen to use present perfect tense?3) We use present perfect tense to talk about a past action that still has the result at the present. 談?wù)撨^去發(fā)生但對現(xiàn)在仍有影響的行為Examples I have lost my wallet.=I dont have it now. Jimmy has gone to America.=He isnt here now.nowfuturepast_ExploringPart 02Whats t

5、he structure of present perfect tense?_Main structureHe has been to space. subject（主語）have/haspast participle（過去分詞）donehave / hasdone+Main structure 主要結(jié)構(gòu)1.What is past paticiple(過去分詞)？2.How will the structure change in different kinds of sentences?have / hasdone+Past paticiple 過去分詞regular verbs(規(guī)則動詞

6、)irregular verbs(不規(guī)則動詞)Past participle of regular verbsBase formSimple pastPast participletalktalkedtalkedlivelivedlivedstudystudiedstudiedstopstoppedstopped(1)一般動詞，在詞尾直接加“-ed ”rules(2)以不發(fā)音的“e”結(jié)尾，只在詞尾加“d ”(3)以“輔音字母 + y ”結(jié)尾，改 y 為 i ，再加“-ed”(4)重讀閉音節(jié)中，以“元音+輔音”結(jié)尾，先雙寫該輔音字母，再加“-ed”Base formSimple pastPast

7、 participlep141 - 142dodiddonegowentgonebewas/werebeenbreakbrokebrokensaysaidsaidspendspentspentPast participle of irregular verbshave / hasdone+Main structure 主要結(jié)構(gòu)1.What is past paticiple(過去分詞)？2.How will the structure change in different kinds of sentences?Back to textbook Ive learnt to use chopst

8、icks, .Its been a fantastic experience so far.Ive learnt a bit of tai chi, .Weve already learnt a lot about Chinese culture and history.The teachers have introduced us to Chinese painting as well.Weve also tried to paint some pictures ourselves.I havent had much success yet, .Ive made many new frien

9、ds.基本結(jié)構(gòu):have / hasdone+Task：Scan to underline all the sentences using present perfect tense.Positive formNegative formhave / hasdone+Main structurePositive formNegative formQuestion form肯定式否定式疑問句式Positive form+主語+have / has + done.Negative form 否定形式I havent had much success yet, .主語+have / has not+d

10、one.have not=haventhas not=hasntQuestion formWatch a video and find out the question form of present perfect tense.Yes or No question一般疑問句式Have you ever imagined a future with me?HaveimaginedHave/has+主語+done.? No, I havent. Yes, I have.Information question特殊疑問句式How long has he been gone?hasbeen Wh-疑

11、問詞+have/has+主語+done.?ConclusionPositive formNegative formQuestion form肯定式：否定式：疑問句式：主語+have / has + done.主語+have / has not+done. Have/has+主語+done.?Wh-疑問詞+have/has+主語+done.?Present perfect tense with already, yet, ever and never.already已經(jīng)yet 還;已經(jīng)ever 曾經(jīng)never 從未用于肯定句中用于否定句和疑問句末用于肯定句和疑問句中表示否定Example I h

12、ave already finished my task. Examples I havent finished my task yet. Have you finished your task yet?Examples He has ever been to Shanghai. Has he ever been to Shanghai?Example He has never been to Shanghai. ATTENTION!We use the adverbs already, ever and never (before/after) have/has and (before/af

13、ter) the main verb .We often use yet at the (beginning /end) of a question or a negative sentence.already已經(jīng)yet 還;已經(jīng)ever 曾經(jīng)never 從未Lets watch a movie for fun!Okpick one from Netflix.What about Bones?Emm, Ive_seen it.Then how about The Grey? Have you _ watched it before?alreadyeverAha, nope. But Im no

14、t a fan of dark movies.Ok, then Boys Girls? Its a romantic story!I have _ heard about this movie but I really want to enjoy a love movie.neverBy the way, the movie Space Jam is on. Great, I havent watched it _. Lets go watch it tomorrow! yetApplyingPart 03Practical drill 1the simple present tensethe

15、 present perfect tense1you play2we are3he goes4I spend5she says6they leavesyou have playedwe have beenhe has goneI have spentshe has saidthey have left Change the words into the present perfect tense.基本結(jié)構(gòu):have / has+done Make the present perfect - it could be positive, negative or question.1) (you /

16、already/ keep a pet for three years)_2) (he / hurt his leg)_Youve already kept a pet for three years.3) (you / eat Thai food before)?_4) (we / not / lose our tickets)_He has hurt his leg.Have you eaten Thai food before?We havent lost our tickets.Practical drill 2Lily hasnt finished her homework yet,

17、 so she cant go out.否定式:have / has not+done Translate the sentences with present perfect tense.Lily尚未完成作業(yè)，所以不能出去玩.Practical drill 3I have been to Beijing twice.肯定式:have / has+done Translate the sentences with present perfect tense.我曾經(jīng)去過北京兩次。我從未去過北京。I have never been to Beijing.否定式:have / has not+doneIn the past one hundred years, China has made great achievements.基本結(jié)構(gòu):have / has+done