Unit 10 第3课时 Section A【语法课】-【高效课堂】2022-2023学年八年级英语下册精品课件（人教版）

Section A Grammar focus-4c 语法课 I've had this bike for three years. Unit 10 Learning Aims Learning Aims 1.现在完成时的构成：主语+have/has +done 要熟练掌握其肯定、否定和一般疑问形式及其简略回答。 2.归纳现在完成时中for和since的用法。 掌握延续性动词和非延续性动词的用法。 能灵活运用现在完成时谈论拥有物。 Review Lead in Lead in now I have had them for 30 years. since my first birthday. since I was 1 year old. How long...? on my first birthday for since since 4 What How When How long have you...? Lead in What is...? How...get...? When...get it? How long have you had it? I have had it for … I have had it since… Pair work Lead in now 10 years ago Nancy bought the bike 10 years ago. Nancy has had the bike for 10 years. Lead in 27 Shanghai 3 days Nancy arrived in Shanghai 3 days ago. Nancy has been in Shanghai since 3 days ago. Lead in now 10 years ago Nancy became a doctor 10 years ago. Nancy has been a doctor for 10 years. Lead in arrive in have been in buy have had become have been Lead in Pair work How long has Nancy...? She has...since/for... leave Beijing, for three days borrow a bike, since she came to Shanghai visit many places for three days Lead in Grammar focus Grammar focus How long have you had that bike over there? I've had it for three years. How long has his son owned the train and railway set? He’s owned it since his fourth birthday. Have you ever played football? Yes, I did when I was little, but I haven't played for a while now. Grammar Focus Grammar focus 1 2 含义: 表示动作从过去某一时间开始一直延续到现在。这一动作可能刚刚开始, 也可能在继续, 其动作是否继续下去, 由上下文而定。这个时态多用于延续性动词。 时间状语: 1. for +一段时间 e.g. for 8 years 2. since +过去的时间点 e.g. since 1999 3. since + 一段时间+ ago e.g. since 23 years ago 现在完成时 Grammar focus for 和 since 在现在完成时中的应用 for与since都能与现在完成时连用，但区别较大： (1) for后须接“时间段” e.g. He has studied English for five years. (2) since后须接“时间点” e.g. He has studied English since 1999. (3) 二者可以转换 for +一段时间 = since + 一段时间 + ago e.g. He has been here for five weeks.