九年級 Unit 15 Section A 1.ppt

1、新目標 九年級 Unit 15,英語課件,Unit 15 Were trying to save the manatees!,How many kinds of Animals can you think of? 2. Can you see them around us? Why?,Warming up,Animals are mans friends.,Whats this? And how to describe it?,enormous,gray,strong,intelligent,Whats this? And how to describe it?,noisy, clever,

2、ugly,chimpanzees,Whats this? And how to describe it?,Playful,fast,kangaroos,Whats this? And how to describe it?,gentle,shy,aggressive,manatees,Whats this? And how to describe it?,Playful, spotted , aggressive ,fast,cheetahs,Whats this? And how to describe it?,aggressive, funny, furry,Polar bears,1b

3、Listening,gentle furry enormous playful noisy shy aggressive gray fast spotted,I am like this animal because I am strong and intelligent. I like water and I like to eat vegetables.,Youre like an elephant.,No.,Youre like a Manatee.,Yes.,I am like this animal because I am lovely and playful. I like to

4、 eat bamboo.,Youre like a panda.,Yes.,2a Listening,Listen and complete the chart.,2b,2500 in the U.S.,the water under the trees in mangrove swamps.,swamps being polluted. not enough food.,10 feet long, large, 1000 pounds heavy,Pairwork,A: How big are manatees? B: Theyre about 10 feet long and they w

5、eigh about 1,000 pounds. A: Where do they live?,B: Their favorite habitat is the water under the trees in mangrove swamps. A: Why are they endangered? B: Some of the swamps have become polluted. Also, there sometimes isnt enough food for all of them.,Explanation,1.I am like this animal because I am

6、strong and intelligent. be like=look like=be similar to =take after 像，看起來像。如： He is like his father. 他像他的父親。 = He looks like his father. = He is similar to his father.,這里的like作介詞，意思為“像”，like 還可做動詞用，表示“喜歡”，like（doing）sth. 喜歡做某事。如： He likes his father very much. 他很喜歡他的父親。 Mary likes playing volleyball

7、. 瑪麗喜歡打排球。,2.How big are manatees? 海牛有多大？ how big. 詢問體重。以how組合的疑問詞組有很多，如： how old 詢問年齡 how often詢問頻率 how long詢問動作持續(xù)的長短 how much詢問質(zhì)量或者價錢 how far 詢問距離 how many詢問數(shù)量 how soon 詢問過多久,3.they weigh about 1,000 pounds, 他們大約重1000磅。 weigh 稱重量，測重量。如： He weighed the stone in his hand. 他用手掂了掂這塊石頭的重量。 The piece of

8、 meat weighs four pounds. 這塊肉重四磅。,weight 還可用做名詞，重量。 如： What is your weight？ 你的體重是多少？,4. Were trying to save the manatees. 我們正在竭盡全力拯救海牛。 Try to do =try ones best to do 努力去做某事。如： Every student should try to study hard in order to study in a university. 為了進入大學學習, 每個學生都應(yīng)該 努力學習。,Grammar,do / does,did,be

9、(am / is / are) doing,have / has done,was / were done,have / has been done,定義：現(xiàn)在完成時表示到目前為止已經(jīng)完成，并對現(xiàn)在留下某種后果和影響的動作。 1. 表示過去發(fā)生的某一動作對現(xiàn)在造成的影響或結(jié)果,常與一些時間狀語。,現(xiàn)在完成時,have / has + 動詞的過去分詞,如: already, yet, ever, never, just, before, once, twice 等連用, 也可以和包括現(xiàn)在在內(nèi)的時間狀語, 如these days, today, this year, so far 等連用。,2.

10、表示過去發(fā)生的動作或存在的狀態(tài),一直持續(xù)到現(xiàn)在,也許還將繼續(xù)下去,可以和表示從過去某一時刻延續(xù)到現(xiàn)在的一段時間的狀語連用。 即for +時間段, since+時間點/從句, in the last ten years等, 謂語只可用延續(xù)性動詞。,2. has / have been to 去過某地表示某人的一種經(jīng)歷,可與once, twice, already, ever, never等連用。 have/has gone to 去某地了,說話時某人已離開此地,在去某地的途中或已在某地。,have / has been in 逗留在某地 (已經(jīng)一段時間)。 常和for ten days, sin

11、ce I came here等連用。,1. Where is Jim? He _ Wuhan. 2. My parents _ the Great Wall twice. They like there very much. 3. _ you ever _ to the Happy valley? 4. How long _ Peter _ the West Hill farm?,have been to,Have,been to,has,been in,has gone to,5. My sister _ the shop. She will be back in two hours. 6.

12、 She _ Shanghai. She isnt here. 7. She _ Shanghai. She is here. 8. She _ Shanghai for two years.,has gone to,has gone to,has been to,has been in,3. already - yet 已經(jīng) 用于肯定句,用于否定句, 疑問句,1. She has not seen this film _. She has _ seen this film. 2. I have _ combed my hair. Have you combed your hair _. 3.

13、 He has _ watched a video. He has not watched a video _.,already,already,already,yet,yet,yet,4. 現(xiàn)在完成時中延續(xù)性動詞和終止性動詞,英語動詞根據(jù)詞義可分為兩種,一種是延續(xù)性的,一種是終止性的,終止性動詞(也可稱為非延續(xù)性動詞,瞬間動詞,或點動詞),如:become, begin, buy, borrow, arrive, die, finish, get to know, go, join, marry, start, stop等。表示動作的發(fā)生 與結(jié)束于一瞬間完成,不能再延續(xù),所以它的現(xiàn)在完成時不

14、能和表示延續(xù)的時間狀語連用,即不能與表示一段時間的狀語, for+時間段, since+時間點/從句連用,也不能用在how long引導(dǎo)的特殊疑問句。,初中英語課本中常見終止性動詞有: leave, go, come, arrive, begin, buy, borrow, die, join, become 等。 終止性動詞要表示持續(xù)時, 可用以下方法： 將時間狀語改為時間段 + ago, 句中謂語動詞用一般過去時。,eg. 我弟弟參軍兩年了。 My brother joined the army two years ago. 若保留for + 時間段, since+時間點/從句, 或用在

15、how long句型中, 則需將終止性動詞改為相應(yīng)的狀態(tài)動詞或延續(xù)性動詞。,come / go / arrive / get / reach / move - be in/at open - be open die - be dead close - be closed become -be borrow - keep put on - wear buy - have,常見終止性動詞與延續(xù)性動詞 (或狀態(tài)動詞) 的對應(yīng)關(guān)系如下:,leave - be away (from) begin / start - be on fall asleep - be asleep end/finish - b

16、e over catch a cold - have a cold,join the army - be in the army be a soldier join the Party - be in the Party be a Party member,1. 吉姆買了這只鋼筆兩年了。 Jim has had this pen for two years. Jim has had this pen since two years ago. Jim has had this pen since 2003. It is two years since Jim bought this pen.,I

17、t has been two years since Jim bought this pen. Jim bought this pen two years ago. 2. 李雷自從2003年就參軍。 3. 那部電影開始30分鐘了。 4. 自從兩年前這家商店就開了。 5. 那個老人已經(jīng)死了五年了。 6. 莉莉六年前就離開家了。,現(xiàn)在完成時和一般過去時的區(qū)別： 現(xiàn)在完成時所表明的是過去發(fā)生的動作對現(xiàn)在的影響, 強調(diào)的是現(xiàn)在的情況, 不可以和表示過去的時間狀語 yesterday, in 1991, three days ago last time, last night等連用。 一般過去時表明的是

18、過去發(fā)生的事實, 和現(xiàn)在不發(fā)生關(guān)系。,5. 現(xiàn)在完成時中的 for 與 since for + 時間段與延續(xù)性動詞的現(xiàn)在完成時連用 since + 時間點/從句。 I have kept the library book for a week. = I have kept the library book since a week ago.,It is /has been + 一段時間 + since. 自從某事發(fā)生已有一段時間了。 eg. It is /has been two years since my brother joined the army.,注意: 1. since 引導(dǎo)的從

19、句中動詞用過去時。 2. when 引導(dǎo) 的特殊問句不與現(xiàn)在完成時連用。 3. have got,has got 雖然是現(xiàn)在完成時,但 have got = have has got = has,1. Its a long time since we _ (meet) last time, isnt it? 2. -I know you _ (choose) a picture book among these. -Yes,Have a look at it, please. 3. So far, spaceships without people _ (reach) the moon and

20、 some other parts of the universe.,met,have chosen,have reached,4. My father _ home for nearly three weeks. A. has gone away from B. has left C. has been away from D. went away,5. Mr and Mrs Green have _ in China for a week. A. been B. got C. arrived D. reached,近義句轉(zhuǎn)換： 1. Jack joined the League five

21、months ago. Jack _ a League member five months ago. 2. Its a long time since we met last. We _ _ each other for a long time since we met last time.,has been,havent,seen,Fill in the blanks with the right forms of the given words. 1. Every day my mother _(get) up early. 2. The dinosaur eggs _ (discover) many years ago by scientists. 3. Listen! Some children _ (sing) an English song over there.,gets,were discovered,are singing,4. In