现在完成时教案

1、 现在完成时（课堂教学设计）一：现在完成时的定义和基本句式结构：通过例句导入，引导学生找出两个例句的不同之处，引出现在完成时的定义。I saw the film yesterday. ( 强调昨天看了这部电影)I have already seen the film three times. (强调已经看过这部电影，潜台词是对这部电影情节较熟悉了或是不想再看了)定义：1. 过去发生并且已经完成的动作对现在造成影响或后果。2. 过去某一时间开始并一直持续到现在并且有可能还会持续的动作或状态。结构：have/has +V过去分词例句：1、I have played basketball for 2

2、 years. 2、He has danced for 5 years. 3、I havent seen her these days.二：动词过去分词的构成：1. 规则变化： (1)一般动词，在词尾直接加“-ed ”。work-worked-worked(2)以不发音的“e”结尾的动词，只在词尾加“d ”。live-lived-lived(3)以“辅音字母 + y ”结尾，将 "y" 变为 "i" ，再加“-ed”。studystudiedstudied(4)重读闭音节结尾，末尾只有一个辅音字母（r、y、x除外），先双写该辅音字母，再加“-e

3、d”。stopstoppedstopped2. 不规则变化：AAA型 cut-cut-cut let-let-letAAB型 beat-beat-beatenABA型 become-became-becomeABB型 bring-brought-brought dig-dug-dugABC型 break-broke-broken练习：写出下列所给单词的过去式及过去分词cost _ meet _ get _ teach _control _ study _ stop _ live _三、现在完成时的否定句及一般疑问句形式：例句：He has danced for 5 years. 否：He ha

4、snt danced for 5 years.一般疑问句：-Has he danced for 5 years? -Yes, he has./ No, he hasnt.练习：1、Julia has gone home.（改为一般疑问句） _ Julia_ home? 2、Jim has been to Japan before.（改为否定句） Jim _ _ to Japan before. 3、My parents has been to Hainan for their holidays（对画线部分提问） _ _ your parents _ for their holidays ?四、

5、现在完成时的时间标志词例句导入：He has never met that kind of person. My mom has changed my bedroom already. Have you finished your homework yet. Have you ever met the person? 现在完成时的时间标志：标志词中文释义用法位置already已经肯定句句末、动词与助动词之间yet还没有（否定句），已经（疑问句）否定句、疑问句句末ever曾经疑问句主语之后，动词与助动词之间never从不任何句式（表否定）动词与助动词之间just 刚刚肯定句动词与助动词之间so

6、far到目前为止 任何句式句首、句尾练习：1、Have you _ been to shanghai? A、yet B、ever C、already2、Have you finished your workbook _? A、already B、yet C、never3、He _ seen the film, so he doesnt want to see it again. A、has B、hasnt C、have 4、-_ they watered the flowers? -Yes, they have. A、Do B、Does C、Have D、Has五、现在完成时的重难点突破：难点

7、（1）：for 和 since 的用法区别例句导入：Look at the two pictures and find the difference between them.（家乡变化的图片）引出：Our hometown has changed since 10 years ago. Our hometown has changed for 10 years. Our hometown has changed since 2008. Our hometown has changed since I came here.总结：for 和since 的用法区别 for 后面跟时间段。 sinc

8、e 后面跟过去的时间点、或者一段时间+ago、或者一般过去时的从句。用since 和 for 填空。练习：1、I have been here _ 2000. 2、I have been here_5 years ago. 3、I have been here_10 years. 4、I have been here_ I was born.难点（2）：瞬间性动词和延续性动词的转换瞬间性动词不能和for、since连用，需要转换成延续性动词。转换方式如下： 瞬间性动词延续性动词die be deadbecome beleave be away fromborrow keepbuy havejo

9、in be inmarry be married给出例句：Toms father has been dead for 4 years.Jane has kept the book for a week.填空练习： 1、When he arrived at the bus stop, the bus _（leave）for 20 mins.2、I _（join）the league for 5 years so far.3、Ben_（become）a teacher for 4 years. 难点（3）：has gone to 与 has been to 的区别 例句导入：1、I have be

10、en to Beijing. 2、- I cant see Tom. Where is he? - He has gone to the library. 3、I have been in Beijing since I was born.总结句型：have/has been to 去了（已回） have/has gone to 去了（未归） have/has been in 在某段时间一直待在某地 练习：用have/has been to，have/has gone to，have/has been in 填空 1、-Jane isnt here. She _ London. -She _

11、there many times. 2、I _Beijing for five years and I like the city a lot.难点（4）现在完成时和一般过去时的区别（通过例题来导出）：1、-Have you seen the film before? -Yes, I _ it last night. A、have seen B、has seen C、saw2、-Have you seen the film before? -Yes, I _ it three times. A、have seen B、has seen C、saw时态 用法 时间状语一般过去时过去某时间发生的动

12、作或存在的状态，与现在无联系。与表示过去的时间连用，如：yesterday,last week, two years ago, just now, in 2010 等。 现在完成时过去的动作对现在的影响或结果;或过去开始延续到现在的动作或状态，与现在有联系。与不明确表示过去的时间连用，如：already, yet, just, recently, ever, before, in the past+时间段，for+时间段，since+时间点等。练习：1、Lily is my classmate. We _ each other since she came to our school. A、know B、knew C、have known D、will know 2、Julias father _ to London last month. He _ there three times. A、went ; have gone B、went ; has been C、has gone ; went D、has been ; went 3、Mother _ me a new coat yesterday. I _it on, it fits me w