《Keep the Candle Burning》Look into Science! PPT优秀课件

冀教版九年级英语上册《Keep the Candle Burning》Look into Science! PPT优秀课件，共25页。

Lead-in

Say how to do the experiment.

Read and answer the questions.

1. How much water should we fill the dish?

Half full of the dish.

2. How long should we let the candle burn?

Two or three minutes.

3. Where should we put the jar?

Put it over the candle until the top of the jar rests  on the dish.

4. What is happening? 

The water inside the jar rises.

Language  points   

1. a lighter or matches打火机或火柴

match 

① n. 火柴，复数形式为matches。

a box of matches 一盒火柴

② n. 比赛，复数形式matches。

three basketball matches 三场篮球赛

③ v. 相称；相配        

Your tie matches your suit. 你的领带和你的套装相配。

2. Examine the water in the jar. 检查广口瓶里的水。

examine  v.  

① 检查。 后接名词或代词作宾语。

The doctor examined the patient. 

那位医生检查了那位病人。

②考核，测验

Our teacher will examine us on history.

我们老师将测验我们历史。

3.When the candle stops burning, it has used up all the oxygen in the air.   

当蜡烛停止燃烧时，它用尽了空气中所有氧气。

use up  用光；用尽（=run out of）

其主语往往是人，宾语往往是被用光的物。

Jim used up his money to buy the computer. 

吉姆为了买电脑花光了所有的钱。

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