《江蘇省徐州市睢寧縣寧海外國語學(xué)校八年級英語下冊《Unit 1 Past and Present》Grammar課件 (新版)牛津版》由會員分享,可在線閱讀,更多相關(guān)《江蘇省徐州市睢寧縣寧海外國語學(xué)校八年級英語下冊《Unit 1 Past and Present》Grammar課件 (新版)牛津版(18頁珍藏版)》請在裝配圖網(wǎng)上搜索。
1、8 B Unit 1 Past and presentGrammar Present perfect tense(現(xiàn)在完成時)(現(xiàn)在完成時)Learning aims:1. 了解現(xiàn)在完成時的概念2. 掌握現(xiàn)在完成時基本句子的結(jié)構(gòu)3. 識記過去分詞的變化規(guī)則 1. I have lived here since I was born.自從我出生以來我就一直住在這里。2.Eddie has eaten my food.埃迪吃了我的食物。過去發(fā)生的動作一直持續(xù)到現(xiàn)在,有可能繼續(xù)持續(xù)下去過去發(fā)生的動作一直持續(xù)到現(xiàn)在,有可能繼續(xù)持續(xù)下去過去發(fā)生的動作,對現(xiàn)在造成影響過去發(fā)生的動作,對現(xiàn)在造成影響3.I
2、have already read this book many times.我已經(jīng)看過這本書很多次了。某個動作迄今為止發(fā)生過多少次某個動作迄今為止發(fā)生過多少次一一.現(xiàn)在完成時的概念現(xiàn)在完成時的概念現(xiàn)在完成時表示從過去持續(xù)到現(xiàn)在的動現(xiàn)在完成時表示從過去持續(xù)到現(xiàn)在的動作或狀態(tài),或已經(jīng)完成但對現(xiàn)在有一定作或狀態(tài),或已經(jīng)完成但對現(xiàn)在有一定的影響的動作。的影響的動作。二、現(xiàn)在完成時句子結(jié)構(gòu)二、現(xiàn)在完成時句子結(jié)構(gòu)(1 1)基本句子結(jié)構(gòu)基本句子結(jié)構(gòu):I/We/You/They + have + done+其它。其它。He/She/It + has+ done+其它。其它。e.g.They _ their
3、homework. (finish)He _his homework. (finish)have finishedhas finished助動詞助動詞 1. I have lived here since I was born2.Eddie has eaten my food.3.I have already read this book many times.主語+ have/ has +V過去分詞三、三、 過去分詞的變化規(guī)則過去分詞的變化規(guī)則(A)(A) 規(guī)則動詞規(guī)則動詞:動詞的過去分詞的規(guī)則變化與動詞的動詞的過去分詞的規(guī)則變化與動詞的過去過去式式的規(guī)則變化相同。四點變化規(guī)則:的規(guī)則變化相
4、同。四點變化規(guī)則: (1)大多數(shù)動詞,在詞尾直接加大多數(shù)動詞,在詞尾直接加“ ed ”。 work-worked-worked, visit-visited-visited (2)、以不發(fā)聲音、以不發(fā)聲音“ e ”結(jié)尾的動詞,只在詞尾加結(jié)尾的動詞,只在詞尾加“ d ”。 live-lived-lived , (3)、以、以“輔音字母輔音字母 + y ”結(jié)尾的動詞,將結(jié)尾的動詞,將 “y” 變?yōu)樽優(yōu)?“i” ,再加,再加“ ed ”。 study-studied-studied, cry-cried-cried (4)、重讀閉音節(jié)結(jié)尾,末尾只有、重讀閉音節(jié)結(jié)尾,末尾只有一個一個輔音字母,先雙寫該
5、輔音字母,輔音字母,先雙寫該輔音字母,再加再加“ ed ”。 stop-stopped-stopped, drop-dropped-dropped (B) (B) 不規(guī)則動詞的過去分詞不規(guī)則動詞的過去分詞原形過去式過去分詞原形過去式 過去分詞dodiddoneeatateeatengowentgonefindfound foundseesawseenforget forgot forgottenbuyboughtboughtcome came comeputputputcutcutcutbuild builtbuiltwritewrote written(Page122)其他的你只能參考課本其
6、他的你只能參考課本P122-123P122-123,慢慢你就會發(fā)現(xiàn)其中的規(guī)律咯!慢慢你就會發(fā)現(xiàn)其中的規(guī)律咯!EXERCISES 1.borrow _ 2.hope_ 3.make_ 4.get_ 5.plan_ 6.cry_ 7.send_ 8.watch_ 9.say_ 10.grow_ 11.hit_ 12.enjoy_(2 2)否定句)否定句主語主語+have /has +not +V過去分詞過去分詞e.g.They _ (not finish)their homework yet (還未)還未). He _ (not finish) his homework yet. havent f
7、inishedhasnt finishedhas not =hasnt have not = havent (3)(3)一般疑問句及回答一般疑問句及回答eg.I have finished my homework.-Have you finished your homework?-Yes, I have. -No, I havent.She has seen the film three times.-Has she seen the film three times?-Yes, she has.-No, she hasnt.e.g._you _the film?(watch)Yes, I _
8、._your father _the film?(watch)No, he _.Have watched haveHas watched hasnt (4)(4)特殊疑問句特殊疑問句特殊疑問詞特殊疑問詞+have/has+have/has+主語主語+done+done+其它其它?e.g.The girl has learned English for 6 years. I have eaten two apples for breakfast.How long has the girl learned English?What have you eaten for breakfast?EXER
9、CISES I ve just eaten the food.一般疑問句: 肯定回答:否定回答:They have lived in Shanghai for 3years.(對劃線部分提問)How long have they lived in Shanghai?Yes,I have.No, I havent Have you just eaten the food? 當(dāng)堂檢測用現(xiàn)在完成時完成下列句子。1.They_ (finish) their homework already.2.John _never_ (visit) China.3.Mr Li _ (repair) over ten
10、 bicycles since Monday.4.We _ (not see) each other for years.5.My parents _ (not come)here yet.have finished has visited has repaired havent seenhavent comeHOMEWORK 1.完成課本P14練習(xí)。 2.識記課本P122動詞過去分詞不規(guī)則變化左半欄?,F(xiàn)在完成時的用法現(xiàn)在完成時的用法1. 1.表示過去發(fā)生的動作或狀態(tài)一直持續(xù)到現(xiàn)在表示過去發(fā)生的動作或狀態(tài)一直持續(xù)到現(xiàn)在, ,可能可能會繼續(xù)下去。會繼續(xù)下去??梢院捅硎狙永m(xù)的時間狀語連用。可以和表
11、示延續(xù)的時間狀語連用。 如如forfor、since since 等引導(dǎo)的等引導(dǎo)的時間狀語時間狀語。(注意:句中謂語動詞要用(注意:句中謂語動詞要用延續(xù)性動詞延續(xù)性動詞)2.2.表示過去發(fā)生的動作對現(xiàn)在造成一定的影響。表示過去發(fā)生的動作對現(xiàn)在造成一定的影響。( (漢語中常用漢語中常用“已經(jīng)已經(jīng)”、“過過”、“了了”等表達等表達) ) 通常與表示包括通常與表示包括現(xiàn)在在內(nèi)的時間副詞現(xiàn)在在內(nèi)的時間副詞just(just(句中)句中), , already(already(句中,句末)句中,句末), , before(before(句末)句末), yet, yet(句末)(句末), never, n
12、ever(句中)(句中), ever, ever(句(句中)中),recently(,recently(句末句末) )等狀語連用。例如:等狀語連用。例如: 1.Eddie has just eaten my food. (Eddie已經(jīng)吃了我的食物。)已經(jīng)吃了我的食物。)2.I have never heard of that before.(我以前從未聽說過那件事)(我以前從未聽說過那件事) 3. Have you ever ridden a horse?(你曾經(jīng)騎過馬嗎?)(你曾經(jīng)騎過馬嗎?) 4.She has already finished the work.(她早已經(jīng)完成這個工作了。)(她早已經(jīng)完成這個工作了。)5.We havent finished our homework yet. (我們還沒有完成作業(yè)呢。我們還沒有完成作業(yè)呢。)3.表示從過去到現(xiàn)在動作發(fā)生過的表示從過去到現(xiàn)在動作發(fā)生過的次數(shù)。次數(shù)。你看過這本電影幾次了?How many times have you seen this film?今天上午我已經(jīng)見過他兩次了。I have met him twice this morning.Homework:1.朗讀課本對話。2.背誦不規(guī)則動詞的過去分詞。3 隨堂.