八年级（下）unit10SectionAGrammarFocus课件

1、 Unit10 I have had this bike for three yearsSectionA Grammar Focus(4a-4c)Aims and Demands1.识记现在完成时的构成：识记现在完成时的构成： 助动词助动词have/has 过去分词过去分词2.理解并会灵活运用现在进行时的两个基本用法。理解并会灵活运用现在进行时的两个基本用法。3.会运用延续性动词和非延续性动词。会运用延续性动词和非延续性动词。4.会运用会运用have / has gone to， have / has been to 5.现在完成时与一般过去时的区别。现在完成时与一般过去时的区别。 Lead

2、in:出示下面Grammar Focus中的典型例句，让学生们先自己观察句子结构，并说出自己对现在完成时的理解。1. How long have you had that bike over there? 那边的那辆自行车你买了多长时间了？ Ive had it for three years. 我买了三年了。2. How long has his son owned the train and railway set? 他的儿子拥有这套轨道火车多长时间了？ Hes owned it since his fourth birthday. 自他四岁生日起，他就拥有了它。3. Have you e

3、ver played football? 你曾经踢过足球吗？ Yes, I did when I was little, but I havent played for a while now. 是的，当我很小时就踢过，但是现在我有好长一段时间没有踢了。 肯定句：肯定句： 否定句：否定句： 一般疑问句：一般疑问句： 【 一一】现在完成时构成现在完成时构成 : 精讲点拨精讲点拨在在 have/has后加后加not. 助动词助动词have（has）+过去分词过去分词把把have/has提到提到主语前主语前. v现在完成时：站在现在完成时：站在现在现在回顾回顾过去过去 1.表示表示“影响影响” 2.

4、表示表示“持续持续”【 二二】 现在完成时的基本用法现在完成时的基本用法 1. “影响影响”表过去发生的某一动作对现在造成的表过去发生的某一动作对现在造成的影响或结果影响或结果. (多数需要结合上下文多数需要结合上下文语境语境）Eg. 近的影响近的影响 I have just had my breakfast. 影响：不饿影响：不饿) 远的影响远的影响 经历经历 eg. I have visited the Great Wall before. just（刚刚）（刚刚）, already（已经）（已经）, before, yet（一般疑问：已经；否定句：还）（一般疑问：已经；否定句：还） ne

5、ver, ever与其搭配的时间状语：与其搭配的时间状语：v1.Shall we eat lunch? I am _ hungry.v2.Have you met our foreign teacher _? No, not _.v3.The computer has not been repaired _. alreadyyetyetyetCan you use already and yet?Fill in already or yetalready常用于常用于肯定句肯定句yet常用于常用于一般疑问句一般疑问句或或否定句否定句末。末。2.“持续持续”表示过去已经开始，持续到现在的表示过去已

6、经开始，持续到现在的动作或状态，并可能继续下去的动作或状态。动作或状态，并可能继续下去的动作或状态。此种用此种用法中表示持续性的动作或状态的动词必须是法中表示持续性的动作或状态的动词必须是延续性动延续性动词词 e.g. 1. My uncle has worked at this factory for ten years.我叔叔已经在这个工厂工作十年了= My uncle has worked at this factory since ten year ago. 2.Ive lived here since 1990自从1990年以来我就住在这里。 3.I havent seen him

7、for three years.我三年没有看见他了。 1.for + 一段时间一段时间(短语）短语） since + 时间点时间点(短语短语) 谓语动词为一般过去时（句子谓语动词为一般过去时（句子 ）与其搭配的时间状语与其搭配的时间状语(默认的默认的时间结点在现在时间结点在现在）2.到目前为止到目前为止/迄今：迄今： so far, till now, up to now3.最近几个日、月、年以来：最近几个日、月、年以来：these days, in the last /past few years/months/weeks/days现在完成时中，现在完成时中，非延续性动词不能与非延续性动词不

8、能与for和和since引引导的表示一段时间的状语连用导的表示一段时间的状语连用，通常要用相应的，通常要用相应的延续性动词来代替。延续性动词来代替。常用的非延续性动词及替代常用的非延续性动词及替代形式如下：形式如下： 【 三三】 延续性动词与非延续性动词在现在延续性动词与非延续性动词在现在完成时中的运用完成时中的运用 finish - come back - leave - come/arrive become begin/start die join borrow buy be over be back be away from be here be be on be dead be a m

9、ember of/be in keep havemarry-be married( )( )( )( )( )( )( )( )I have bought a new dictionary for a week. I have had a new dictionary for a week.我买一本新词典已有一星期了。我买一本新词典已有一星期了。They have come here for two days.They have been here for two days.他们来这儿已经两天了。他们来这儿已经两天了。He has married for two years.He has be

10、en married for two years.他已结婚两年了。他已结婚两年了。The man has been dead for several years.The man has died for several years.这个人已经死了几年了。这个人已经死了几年了。请判断请判断4a Rewrite the sentences using for or since 1.Jim is in Japan.He arrived there three years ago.2.They are very hungry.Their last meal was ten hours ago.3.I

11、have a camera.I bought it in 2009.4.I know Anna.I first met her three years ago.5.Linda is ill. She became ill on Monday.两者都表示过去发生的事情，但一般过去时只两者都表示过去发生的事情，但一般过去时只 强调过去强调过去某时发生的某时发生的 事情或单纯叙述事情或单纯叙述过去过去的事情，的事情， 不涉及与现在不涉及与现在的关系的关系；现在完成时；现在完成时强调强调过去的事情对过去的事情对现在现在的的影响或结果，影响或结果，主要说明现在的情况主要说明现在的情况。 I saw th

12、is film yesterday. （强调看的动作发生过了。）（强调看的动作发生过了。）I have seen this film. （强调对现在的影响，电影的内容已经知（强调对现在的影响，电影的内容已经知了。）了。） 【 四四】 与一般过去时的区别与一般过去时的区别 Put the following sentences into English.1. A: 火车已经开走了火车已经开走了. B: 什么时候开走的什么时候开走的? A: 半个小时之前开走的半个小时之前开走的.2. A: 这本书我已经买了两年了这本书我已经买了两年了. B: 你在哪儿买的你在哪儿买的? A: 在我老家买的在我老家

13、买的.3. A: 你看过这部电影吗你看过这部电影吗? B: 看过看过. A: 什么时候看的什么时候看的. B: 上周星期天看的上周星期天看的.A: The train has left.B: When did it leave？A: It left half an hour ago.A: Have you seen the film?B: Yes, I have.A: When did you see it?B: I saw it last Sunday.A: Ive had the book for two years.B: Where did you buy it?A: I bought

14、it in my hometown.当堂检测当堂检测一、小试牛刀一、小试牛刀4b Fill in the blanks with the correct forms of the verbs in blanks.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

15、 last November.We _(buy)it from the Li family when they moved to the last year.4.Cathy and Amy _(not )be back to their hometown for two years.They _(miss)their hometown a lot and hope to vist the place next year.5.This museum _(be )here for over 20 years.Tt _(be )one of the oldest buildings in this

16、small town. 当堂检测当堂检测二、能力提升二、能力提升( )1. 2010河南26题( C )26 Joe，my close friend，moved to Beijing years ago，and I him since then. A dont see B didnt see C havent seen D wont see ( ) 2. 2011河南33题Excuse me, where is Mr Browns office? Sorry, I dont know. I _ here for only a few days. A. work B. worked C. hav

17、e worked D. will work ( )3. 2012河南25题Id like to introduce my best friend to you, peter. Thank you, Lucy. But we _ already. A. meet B. met C. will meet D. have met ( ) 4. 2013河南27题what_the noise,Bill? -sorry,I broke my glass. A.is B.was C.has been D.will be2010-2017河南中考现在完成时河南中考现在完成时 真题演练真题演练( ) 5. 2

18、014河南24题-Are you going anywhere?-I _about visiting my sister,but I have changed my mind. A.think B.have thought C.will think D.thought( ) 6. 2015河南24题I heard a new song on the radio.I _high and low in the musicstore,I cant find the song. A.search B.have searched C.am searching D.will search( ) 7.2016河南28题-There is s