《九年级英语全册《Unit 5 Look into Science》Lesson 26 Keep the Candle Burning学案 （新版）冀教版-（新版）冀教版初中九年级全册英语学案.doc》由会员分享，可在线阅读，更多相关《九年级英语全册《Unit 5 Look into Science》Lesson 26 Keep the Candle Burning学案 （新版）冀教版-（新版）冀教版初中九年级全册英语学案.doc（2页珍藏版）》请在三一文库上搜索。
1、Lesson 26: Keep the Candle BurningI. Learning aims:Master the new words: holder, shallow, lighter, match, examine, oxygen II. Learning important and difficult points: 1) Let the candle burn for two or three minutes.2）When the candle stops burning, it has used up all the oxygen in the air.3）How far d
2、oes it rise?4) Because about one fifth of the air is made up of oxygen, the water rises and fills about one fifth of the jar.Language Points:词汇详解1. When the candle stops burning, it has used up all the oxygen in the air. 当蜡烛停止燃烧时，它就用完了空气中所有的氧气了。【用法】use up意思是“用完、用光”，这是“动词 + 副词”短语。这类短语用名词作宾语时，名词可用在副词前
3、，也可用在副词后；用代词作宾语时，代词则必须用在副词前。【举例】I gave Li Ming a lot of pencils, but he has used them up already. 我给了李明很多铅笔，但他已经把它们都用完了。2. Because about one fifth of the air is made up of oxygen, the water rises and fills about one fifth of the jar. 因为组成空气的成分大约五分之一是氧气，所以水会上升并且填充瓶子的大约五分之一。【用法】短语be made up of意为“由组成”，
4、后加名词或代词作介词宾语。【举例】This grade is made up of ten classes. 这个年级是由十个班组成的。【用法】句中的one-fifth意思是“五分之一”，这是一个分数。分数的表达一般遵循以下规则：分子用基数词，分母用序数词；当分子大于一时，分母要用复数形式；并且其中的连字符号有时可以不要。【举例】one-fourth 四分之一 three fifths 五分之三Evaluation feedback(测评反馈)I. 从方框中选择适当的动词并用其适当形式填空。make light watch put burn1. Danny _ the candles and
5、then blew them out.2. Look at the fire. It has kept _ for three hours.3. Zhang Hong _ the candles in the candleholder and sat down.4. _ the observation, Mr. Wang is working hard day and night.5. _ carefully and youll find the differences between the two paintings.II. 根据句意和所给的首字母提示用适当的词语填空。1. I like
6、science and I think it is very i_.2. He cut the apple into h_ and let me choose.3. If I turn off all the lights in the dark. What will h_?4. Jenny, please fill the bottle f_ of water.5. We are s_ you will like this subject.III. 按要求进行句式转换，每空一词。1. Let her help you with your English.（反意疑问句） Let her help you with your English, _ _?2. The candle is pink.（对画线部分提问） _ _ is the candle?3. The bag is full of rice.（同义句） The bag is _ _ rice.4. She lighted the candle with a match.（一般疑问句） _ _ _ the candle with a match?教学反思：