《Keep the Candle Burning》Look into Science! PPT

《Keep the Candle Burning》Look into Science! PPT免费下载

第一部分内容：词汇听写

同学们，上一课学习的单词你们都掌握了吗？现在大家来检验一下，点击下面的音频开始听写吧！

Do you like doing science experiments?

Why or why not?

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Keep the Candle BurningPPT，第二部分内容：课堂导入

THINK ABOUT IT

·Do you like doing science experiments? Why or why not?

·What will happen if you put a jar upside down over a burning candle?

Can you see the candle holder in this picture? 

The candle is pink. The candle holder is grey. 

The candle holder is“holding” the candle!

What do you do?

1．Put the candle in the candle holder.

2．Put the candle holder on the dish.

3．Fill the dish half❸ full with water.

4．Light❹ the candle.

5．Let the candle burn for two or three minutes.

6．Carefully put the jar over the candle until❺ the top of the jar rests on the dish.

7．Examine the water in the jar. What can you see?

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Keep the Candle BurningPPT，第三部分内容：知识讲解

keep /kiːp/ v.保持 

eg：You should keep the room clean.

你应该保持房间清洁。

keep的用法： 

keep＋宾语＋形容词，意为“使……保持某种状态”。 

You can’t sneeze and keep your eyes open at the same time.

你不能在打喷嚏的同时让你的眼睛睁着。 

keep sb. from doing sth. 阻止

某人做某事，相当于“stop sb.from doing sth.”。 

We should keep the children from swimming alone in the sea.

我们应该阻止孩子们单独在海里游泳。 

keep (on) doing sth. 

继续，重复做某事。 

Keep smiling! 

保持微笑！ 

match/mætʃ/ n.火柴，比赛 v.相称，相配 

eg：We need to light a match.

我们需要点一根火柴。

They beat us last time，but we hope to win the next match.

上次他们打败了我们，但我们希望赢得下次的比赛。

The picture matches the story.

这幅图和故事相配。

match作名词时，为可数名词，复数为matches。

eg：Don’t strike matches if you smell gas.

如果你闻到煤气味，就不要划火柴。

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Keep the Candle BurningPPT，第四部分内容：Let's Do It !

1.Read the lesson and fill in the blanks.

Let’s do the experiment together! Put the candle in the candle holder. Put the candle holder on the dish. Fill the dish half full with water. Light the candle with a________ or a lighter. What can you see? The candle is burning. ________the candle burn for two or three minutes. Then carefully put the jar over it until the top of the jar rests on the dish. As the candle burns，it ________the oxygen in the air.

When the candle stops________，it has used up all the oxygen in the air. The water inside the jar ________ and fills about ________ of the jar. This is because about one fifth of the air is made up of oxygen.

2.Circle the correct words to complete the sentences.

1．Don’t (use up /push up) all of the ink. Leave some for me.

2．The medical team (is made of / is made up of) five experienced doctors.

3．Please fill the hole (with /in) sand and water.

4．They didn’t realize their mistake (until /as) we told them.

5．My brother wasn’t (strong enough/enough strong) to lift the box.

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Keep the Candle BurningPPT，第五部分内容：课堂练习

一、根据汉语提示完成句子

1．Please pass me a ________ (浅的) dish.

2．I need some ________ (火柴) to light the candles.

3．There is one­fifth ________ (氧气) in the air.

4．After finishing all your work，you should ________(检查) it carefully.

5．We have __________ (用完) our salt.

二、单项选择

6．Jim ________all his money to buy the computer.

A．fixed up  B．used up  

C．ate up     D．Got

7．—Have you finished the work?

—Not yet，but no matter how hard it is，we’ll keep________ until we finish it.

A．failed  B．trying  

C．tried    D．failing

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Keep the Candle BurningPPT，第六部分内容：课堂小结

本节课主要学习了以下重点内容: 

（1）重点单词：keep，match，half，light，until，as, stop等。

（2）重点短语：use up, how far, one fifth等。

1.熟记本课时的词汇 

2.完成本课时的课后作业

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