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人教版高中英语选修6《Unit 4 Global warming》教案【一】 教学准备 教学目标 Teaching Aims:

In this class Ss will be able to

① practice skimming and scanning for information needed like what are the two concerns and what are Earth Care’s suggestions.

② Master the phrases such as: put up with, so long as, and so on, make a difference, have no effect on … , by making sentences or by using them into the post er.

③ become aware of the serious effects of global warming and the importance of saving energy to be environmentally friendly.

④ Summarize the points according to their understanding. ⑤ work together to design a poster by using the suggestions in the article. 教学重难点

Teaching Difficulties:

Students may find it hard to add more suggestions about how to save energy in our daily life and to summarize the points according to those suggestions. Students may not know clear what is a poster and how to design an attractive and persuasive poster in short time. 教学过程

Teaching Procedure:

Step1. Lead-in (individual & collective work)

1. Teacher begins the class by asking: Have you ever seen the movie The Day After Tomorrow? and then let students enjoy a short movie clip with the following two questions: ① What kinds of disasters have you seen in the film? ② Can you guess how they came about (happen)?

2. introduce the topic: global warming. And then have a further question:

①What other disaster will be caused by global warming? 【Designing Purpose】

To arouse students’ interest by watching the movie clip and educe the topic, that is global warming. And then by showing a lot of pictures, make students know and understand the

terrible effects of global warming, thus making preparations for promoting environmental protection. Step2. While Reading (Individual work)

Skimming: Go through the first letter to f ind: ① who is the writer? ② what are his two concerns?

Scanning: Read the second letter and answer the following questions:

① Does Earth Care agree with Ouy ang Guang’s opinion that individuals can have no effect?

② what are Earth Care’s suggestions? ③ Can we carry those suggestions out? Why? 【Designing Purpose】

To help the students grasp the main information of the two letters by skimming and scanning. While stud ents get the answer to question1, ask them to find the supporting sentence : Together, individuals can make a difference. We do not have to put up with pollution. Guess the meanings of the two italicized phrases according to the surroundings and their understanding.