人教版英语选修六《 Unit 4　Global warming Learning about Language》优质课ppt课件

人教版英语选修六《 Unit 4　Global warming Learning about Language》优质课ppt课件

Lead in

1.On the one hand，Dr Foster thinks that any trend in which the temperature increase by 5 degrees would lead to a catastrophe.

2. All scientists subscribe to the view that the increase in the earth’s temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy.

3.In fact，Hambley states，“More carbon dioxide is actually a positive thing.

4.Make a list of the things that consume in your home，school，or any other places you can think of.

5. Glance quickly at the magazine article and answer the questions.

Practicing

1.Finish exercise 1 on the guiding case.

Practicing

2.Finish exercise 2 in the text book.

By learning the reading passage, we know that the earth is becoming warmer. Why?

2. It was a scientist called Charles Keeling, who made accurate measurements of the amount of

carbon in the atmosphere from 1957 to 1997.

3. …it is burning of more and more fossil fuels that has resulted in this increase in carbon dioxide.

1. It is human activity that results in the global warming.

强调句结构的基本用法

强调句型中, 为了强调句子的某一成分(通常是主语、宾语或状语), 常用结构:

It is / was + 被强调部分 + that (who) + 原句剩余部分。

注意：

①如果强调的是人, 其后用that或who均可;

②如果强调的其它成分, 其后一律用that。

We will have a big party at the

gym on December 30 because

the New Year’s Day is coming.

①主语