冀教版九年级英语Unit5 Lesson 26Keep the Candle Burning(共19张PPT)

1、 袁隆平袁隆平 Yuan Longping He was burn in 1930. He came up with an idea for a hybrid rice in the 1960s. His dream is to grow a new type of rice that would be as big as a peanut. What do we need to do the experiment? light (lit, lighted / lit, lighted) 点燃，使燃烧点燃，使燃烧 burn (burned, burnt/ burned, burnt) 燃烧燃烧

2、 a matchmatches a shallow dish with water How to do the experiment? 1) Put the candle in the candleholder. 2) Put the candleholder in the dish. 3) Fill the dish half full of water. 4) Light the candle. 5) Let the candle burn for two or three minutes. 6) Carefully put the jar over the candle until th

3、e top of the jar rests on the dish. 7) Look at the water in the jar. What makes the candle burn? Oxygen 氧气 make/let sth./sb. do 使某物/某人做. eg: Let the candle burn for two or three minutes. I make the student go out. Why did the candle stop burning? Is there any oxygen in the jar? use up eat up drink u

4、p eg:I have used up the water in the bottle. He has eaten up the bread. She has drunk up the water. half: half a year = a half year half an hour one-fifth 1 2 1 5 1 3 1 4 3 4 分子基，分母序，分子分子基，分母序，分子 1 ,分母加分母加 S three fourths three quarters one (a) quarter one fourth one third a (one) half one second (o

5、ne-second) 1 3 += 1 3 two thirds 1 4 += 2 4 three-fourths 1 5 += 1 5 two fifths 1 5 += 2 3 thirteen-fifths candle candleholder dish fill half light burn uses burning up Read the text and fill in the blacks. Lets do an experiment. First find a and then put it in the . Where do we put the candleholder

6、? Put it in the . Next the dish full of water. After that, we can the candle. Let the candle for two or three minutes. At last put the jar over the candle. What can we see? As the candle burns, it up oxygen in the air. When the candle stops , it has used up all the oxygen. The water inside the jar g

7、oes . 1.You are very tired. Youd better stop _(have) a rest. 2. What do you use to make a candle _(burn)? 3. You should put the jar over the candle _(careful). 4. He _(light) a candle and the room was bright. to have burn carefully lighted/lit 用所给单词的正确形式填空：用所给单词的正确形式填空： 5. _(two), ask the students to guess what will happen. 6. He kept the candle _(b