初四英语语法教案

2020-03-02 07:32:17 来源：范文大全收藏下载本文

初四英语语法课教案复习现在完成时

教学目标：

1.复习现在完成时的用法、构成及标志词

2.常见的短暂性动词及其连用的时间段的转换。 3.利用现在完成时解决实际问题。

教学重难点：

现在完成时中的非延续性词在何种情况下转化为延续性词及如何转化。

教学步骤：Step 1:Free talk

1.What are you doing now? 2.What did you do last night? 3.How do you like your English? 4.How are you gong to improve your English? 5.Have you ever been to Weihai? Step2: Revision by doing exercises 1.Listen! Who ________(knock) at the door? 2.It is 12 o’clock.The Greens ________(have) lunch.3.Where ________ Tom ________(come) from? 4.Bob _________(go) to school on foot every day.5.I ________(not do) my homework last night.Step3: Presentation Our winter vacation was over, what did you do in your vacation? How many places have you been to? Have you ever traveled to another country? Now this cla we will revise the tense “ the present continue tense”.定义一:表示过去发生的动作对现在造成的影响或结果。

标志词：just是刚刚, before是以前, ever是曾经, never是从不, already是已经，用在肯定中, yet是仍还，用在否定句或疑问句中。例如： Tom has just come back.Tom刚刚回来了。

I have already finished my homework.我已经完成我的作业。

Mary hasn’t finished her homework yet.Mary还没完成她的作业。

In order to help the students understand the tense, and then let them do the following exercises: 1.My father ________(not come) back yet.2.I _______ never ________(be) to Beijing before.3.I _________(not have) my lunch yet.4.________ you _______(see) the film before? 5.Tom ________already ________(finish) his work.:

定义二：表示从过去开始一直延续到现在的动作或状态。在此必须强调动词必须是延续性动词。这一点也是这一用法的重点和难点。常见的非延续动词有come, start/ begin, buy, borrow, leave, die and so on.标志词：for, since.即看到for或since时，动词必须转化成延续性动词，转化关系如下：come 转化为be here 或be in; start/ begin 转化为be on; buy转化为 have; borrow 转化为keep; leave转化为 be away (from); die 转化为be dead。例如：

我买这辆自行车两年了。I have had the bike for two years.他爷爷死了十年了。His grandpa has been dead for ten years.电影上演十分钟了。The film has been on for ten minutes.Let the students understand “for” or “since” by doing exercises.Tom has been in Beijing ______ ten years.Our country has changed a lot ________1980.He has made many friends _________ he came to this school.I have learned English _________ seven years.通过以上练习题，他们会发现后for跟时间段；而since后跟时间点或从句。注意：任何事物都不是一成不变的，通过上下文的理解来判断时态也很重要。 Step 4: Exercises:(一) 用所给词的适当形式填空。 1.______ you ________(read) the book before? 2.Tom _______ just _______( come) back.3.I _______( have) an allergy since I ________( be) six.4.My father ________( be) much healthier since he _______-( give) up smoking.5.where is your father? He ________( go) to work.6.________ you ________( finish) your homework? Yes, I have.When _______ you ________(finish) it? Ten minutes ago.7.How long _______ you ________(collect) stamps?

（二）翻译下列句子1.这位老人死了三年了。 2.格林一家来中国十年多了。 3.这部电影上演十分钟了。 4.我买这块手表四年了。 5.我爸爸毕业二十年了。

（三）改错题1.The poor man has died for a long time.2.They have come to China for ten years.3.How long may I borrow the bike? 4.The movie has started for ten years.5.Tom has left school since ten years ago.6.My father has become much healthier since he gave up smoking.大量的练习是理解现在完成时的关键。

Homework:用现在完成时介绍一下你的假期生活。例如你去过哪些城市，参观过哪些名胜古迹等等。