英語人教版八年級下冊Unit10 SectionA 3 .doc

Unit 10 Ive had this bike for three years. Section A 3 (Grammar focus 4c)教學(xué)目標(biāo)： 知識目標(biāo):掌握現(xiàn)在完成時的用法 能力目標(biāo):正確區(qū)分現(xiàn)在完成時與一般過去時; 正確運用for 和since的用法 情感目標(biāo):正確處理并充分利用自己的廢舊物品。教學(xué)重點:正確區(qū)分現(xiàn)在完成時與一般過去時; 正確運用for 和since的用法 教學(xué)難點：非延續(xù)性動詞和延續(xù)性動詞之間的轉(zhuǎn)換課前準(zhǔn)備：PPT and Learning Guide教學(xué)過程： Step 1 Group work 出示下面的典型例句，讓學(xué)生們先自己觀察句子結(jié)構(gòu)，對比現(xiàn)在完成時和一般過去時的不同。1. How long have you had that bike over there? 那邊的那輛自行車你買了多長時間了？ Ive had it for three years. 我買了三年了。2. How long has his son owned the train and railway set? 他的兒子擁有這套軌道火車多長時間了？ Hes owned it since his fourth birthday. 自他四歲生日起，他就擁有了它。3. Have you ever played football? 你曾經(jīng)踢過足球嗎？ Yes, I did when I was little, but I havent played for a while now. 是的，當(dāng)我很小時就踢過，但是現(xiàn)在我有好長一段時間沒有踢了。Step 2 精講點撥 現(xiàn)在完成時表示從過去已經(jīng)開始持續(xù)到現(xiàn)在的動作或狀態(tài)，可以和表示“從過去某一時刻延續(xù)到現(xiàn)在的一段時間狀語”連用，如“for + 時間段”、“since + 過去時間點”、“since + 過去時的從句”、“since + 一段時間 + ago”。且for與since引導(dǎo)的時間狀語可以相互轉(zhuǎn)換。e.g. My uncle has worked at this factory for ten years.= My uncle has worked at this factory since ten year ago. Ivelivedheresince1990自從1990年以來我就住在這里。 Ihaventseenhimforthreeyears.我三年沒有看見他了。Shesbeenatthisschoolsincefiveyearsago. 自從五年前以來她就在這個學(xué)校。歌訣：含有for，since的現(xiàn)在完成時的用法歌訣: 過去的動作或狀態(tài)，一直持續(xù)到現(xiàn)在，for、since把時間帶句中動詞的特點此種用法中表示持續(xù)性的動作或狀態(tài)的動詞必須是延續(xù)性動詞（否定句除外）1. 這本書我買了5年了。 I have bought the book for five years. ( ) Ive had the book for five years. ( )2. 你哥哥參軍多長時間了？ How long has your brother joined the army? ( ) How long has your brother been in the army/been a soldier? ( )非延續(xù)性動詞和延續(xù)性動詞之間的轉(zhuǎn)換1. 轉(zhuǎn)換為相應(yīng)的延續(xù)性動詞，用于現(xiàn)在完成時。 borrow keep buy have put on wear catch a cold have a cold get to know know get to sleep sleep2. 轉(zhuǎn)化為“be + 形容詞/副詞/介詞/名詞” begin / start be on go out be out close be closed open be open get to/arrive/reach be (in) die be dead leave be away finish be over fall sleep be asleep join be in/be a member of become be make friends be friends come/go be + 相應(yīng)的介詞短語Step 3 4a Rewrite the sentences using for or since1. Jim is in Japan. He arrived there three years ago.Jim has been in Japan for three years.2. They are very hungry. Their last meal was ten hours ago. They have been hungry for ten hours/since ten hours ago.3. I have a camera. I bought it in 2009. I have had a camera since 2009.4. I know Ann. I first met her three years ago. I have known Ann for three years/since three years ago.5. Linda is ill. She became ill on Monday. Linda has been ill since Monday.Step 4 4b Fill in the blanks with correct forms of the verbs in brackets.1. I _ (never be) to the water park before. I want to _ (go) next month before the weather gets too cold.2. They _ (never own) any pets, but they _ (always want) to have a dog.3. We _ (have) a piano since last November. We _ (buy) it from the Li family when they moved to the US last year.4. Cathy and Amy _ (not be) back to their hometown for two years. They _ (miss) their hometown a lot and hope to visit the place next year.5. This museum _ (be) here for over 20 years. It _ (be) one of the oldest buildings in this small town.Step 5 Group work4c Fill in the questions and ask two students. Then complete the chart.1. Do you have a(n) _? How long have you had it?2. Do you own a(n)_? How long have you owned it?ThingsHow longTonyfavorite book basketballfor two yearssince he was 10years oldStudent 1Student 2Homework：Write a passage according to the chart in 4c.板書設(shè)計:Section A 3 (Grammar focus 4c)現(xiàn)在完成時for + 時間段、since + 過去時間點、since + 過去時的從句、since + 一段時間 + ago非