Learning about Language教案评析

Unit4

Meeting your ancestors Teaching Design

for grammar Revise Present Perfect Continuous Tense

金石中学

章彬彬

2018.6.22 Objective: To revise the present perfect continuous tense and use it properly Step1: Listen to an English song Way back into love and fill in the blanks. I _____________ with a shadow overhead I _______________ with a cloud above my bed I've been lonely for so long Trapped in the past, I just can't seem to move on I _____________ all my hopes and dreams away Just in case I ever need them again someday I _______________ aside time To clear a little space in the corners of my mind Conclude the structure:

have/has + been + v-ing Step 2: Study two example situations in two pictures When do we use this structure? 1. We use the present perfect continuous tense to talk about actions that

have just finished but are still connected with the present in some way. 2. We also use the present perfect continuous tense to talk about actions that started in the past and are still continuing. More examples: She has been living in New Zealand for over a year now. Your eyes are red — have you been crying? How long have you been waiting for me? It’s been raining heavily all night.

Step3: Have a look Look at the following sentences: 1. I’ve been waiting for you for a long time! (必修3) 2. Recently, however, scientists have been finding that long-term use of these fertilizers can cause damage to the land and, even more dangerous, to people’s health. (必修4) Sentences from this unit: 1. We’ve been excavating here for

many years and …

2. We have been excavating layers of ash almost six metres thick, …

3. Well, we’ve been finding the bones of tigers and bears in the caves, and we think these were their most dangerous enemies. Step4: 现在完成进行时: 基本用法

1) 强调动作的持续性。

The telephone has been ringing for

almost a minute. Why hasn’t

anyone answered it? 电话响了差不多一分钟，为什么没人接? 2) 表重复。叙述从过去某时到现在或最近一直重复的动作。

The weather has been changeable lately; I’ve been having a lot of colds.

最近天气变化无常，我时常感冒。

3) 有感情色彩。

Too much has been happening today. 今天真是一个多事之日。

4) 现在完成进行时有时可以表示刚刚完结的动作。有时它是现在事件的直接原因，或者是得出结论的证据。

My hands are dirty. I’ve been painting the car. 我的手很脏，我在油汽车来着。

Your eyes are red and puffy. Have you been crying? 你的眼睛又红又肿，你是不是哭来着？

Step5:

现在完成进行时和现在完成时的比较: 1) 现在完成时强调动作在过去已经完成, 但对现在有影响或其结果现在仍然存在。

I have written a book on UFOs. It was finished last year. 现在完成进行时着意于动作本身，是一种持续的(但不一定是结束了的)活动。

I have been writing a book on UFOs. I should be able to finish it early next year.

2) 现在完成时陈述事实。

My father has lost his keys. 现在完成进行时则强调动作在不久以前持续进行的情景，并带有感情色彩(有“责怪或无奈”之意)。

My father has always been losing his keys. 3) 现在完成时既可用于状态性动词，也可用于动作性动词。

I have had this computer for 10 years, with which I have written plenty of articles. 现在完成进行时通常只用于动作性的动词。

I have been writing articles with this computer for 10 years. 4) 有少数动词(如work, study, live, teach, stay等)在表示持续一段时间时用这两种时态含义差不多，只是用现在完成进行时更强调动作的持续性。

— How long have you worked / been working here? — For ten years. Step6:Practice Fill in the blanks. 1. —— Hi, Tracy, you look tired. ——

I'm tired. I ____________________ (paint) in the living room all day. 2. — There is so much snow these days, isn't there? — Yes, it _________________ (snow) for a few days.

3. Although these scientists _________________ (work) on the project for nearly four years, I don't know how long it will last. 4. Now that she is out of job, Lucy ___________________ (consider) going back to school, but she hasn't decided yet. 5. The little boy is dirty from head to foot because he _______________ (play) in the mud all morning. Step7: Review 现在完成进行时，其构成为：

have/has + been + v-ing 其表达的意思主要有两种：

1. 表示从过去某时开始一直持续到现在的动作，并且还将持续下去。

2. 表示在说话时刻之前到现在正在进行的动作。

Step8 : Homework A sheet of practice after class