英语人教版八年级下册现在完成时态.docx

现在完成时教学详案Book：初二配套练习下B unit 8Teaching objects：初中二年级Teaching aims：1、现在完成时的概念、基本结构、信号词；2、动词过去分词变化规则；3、have been to和have gone to用法区别；4、for和since用法区别； 5、延续性动词和非延续性动词用法区别；Key points：1、 现在完成时的概念、基本结构、信号词；2、 for和since用法区别； 3、 延续性动词和非延续性动词用法区别；Difficulties：1、for和since用法区别； 2、延续性动词和非延续性动词用法区别；Teaching Contents：Step 1: Warm- up & Lead in通过话题travelling引出本堂课的语法点：现在完成时； 板书句子，为语法总结做铺垫；T: Good afternoon, everyone.S: T: How are you today?Ss: T: Do you like travelling? Have you ever been to Disneyland? Ss: Yes./ No.T: I have a friend, he has gone to The Disneyland in Hong Kong.He has visited some places in Hong Kong.He has already taken many pictures here.He has already visited The Ocean Park.He has walked on The Avenue of stars. 通过以上句子，由教师引导学生进行句子分析，得出现在完成时的概念、结构； 并总结现在完成时句型以及信号词； He has eaten much delicious food there.But he has bought many presents for us. I havent seen him for a week. (板书)Step 2: Presentation将以上句子呈现进行分析：He has visited some places in Hong Kong.He has already visited The Ocean Park.He has eaten much delicious food there.I havent seen him for a week.T: 第一个句子，He has visited some places in Hong Kong.，他已经游览了香港的几个地方，动作从过去就发生，一直持续到现在，对现在造成一定的影响，并且有可能继续持续下去；同样：He has eaten much delicious food there. 动作也是从过去就发生，对现在造成影响；那么在英语中，用来表示过去发生持续到现在，对现在造成影响或后果的时态，用现在完成时。T：现在完成时的结构是怎样的呢？Ss:T: 肯定句：主语+have/has + V过分+其他 否定句怎么变呢？谁来帮我一下？Ss: （学生可能得出不正确的答案，教师纠正）T: 否定句： 主语+have/has not +V过分 +其他 一般疑问句：Have/has + 主语+ V过分 + 其他 回答：Yes,主语+have/has. No, 主语+ have/has not.T: 动词过去分词变化规则：在学生了解现在完成时基本用法之后，引入have been to 和 have gone to区别； 进入for 和since用法区别的讲解； （同动词过去式变化规则：直、去、双、改+不规）T: 现在完成时的信号词：Already, yet, ever, just, never 等；T：Can you guess, how long has he been there?Ss: T: He has gone to Hong Kong. But I have never been to Hong Kong before.have been to 表示说话人在现场，或者表示去了已归；have gone to 表示说话人不在现场，或者去了未归；那找两个同学给我翻译一下几个句子：1、我去过昆明两次； 2、他的奶奶已经去北京了；T : He has been in Hong Kong for a week. 这个句子中，for 后面跟的是a week, 是一段时间，表示时间段；句子翻译：他的奶奶已经去北京有30年了；_同样这个句子He has been in Hong Kong for a week.我们也可以说：He has been in Hong Kong since May 24th.Since后面跟的是5月24日，为时间点；表示点时间；.那么， 同学把这个句子用since改一下：His grandmother has been in Beijing for 30years._ 最后，这个句子He has been in Hong Kong for a week.还可以这样说 He has been in Hong Kong since a week ago.通过句子引出瞬间动词和延续性动词的用法区别； 给出常见的瞬间动词变延续性动词； 也就是说：(许多情况下，我们都可以看作)Since+时间段+ago =for +时间段句型转换：His grandmother has been in Beijing for 30 years. _T: 句子翻译：(1)他的奶奶已经死了； _His grandmother has died._(2)他的奶奶已经死了有5年了；_His grandmother has died for 5 years. (误)_ _His grandmother has been dead for 5 years. (正)_die 为瞬间动词（非延续性动词，瞬间就完成，不能持续下去），不能和since以及for连用； 必须转换为延续性动词be dead才能和since以及for连用；常用的瞬间动词变延续性动词：come/arrive/reach/get to-be in go out-be out finish-be over open-be open die-be dead Buy-have Come back-be back Borrow- have/keepStep 3: Practice1、现在完成时练习单；2、让学生做配套练习上相关习题；Step 4: C