初中英语多媒体教学课件：Unit4 Look into Science！Lesson 30（冀教版八下）（共14张PPT）

Lesson 30 Keep the Candle Burning! Lead in 1. Do you think science is interesting? Why or why not? 2. Name one or two famous Chinese scientists. What do you know about them? 1.candleholder n. 蜡台;烛台 2.shallow adj. 浅的 3.match n.火柴；比赛 4.burn (burned, burnt ) v. 燃烧 5.light (lit, lighted) v. 点燃,使燃烧 6.oxygen n. 氧气 7.gray （=grey） adj. 灰色的 8.one-fifth 五分之一 Presentation New words To make a candle burn, you “light” it. What do you use? A match. Can you see the candleholder in this picture? The candle is pink. The candleholder is gray. The candleholder is “holding” the candle! What do you need to do the experiment? Read carefully and answer the questions. a candle a candleholder a big glass jar a shallow dish with water matches What is happening? When we light the candle, the candle will _____. It _____ ____ oxygen in the air. When the candle stops _______, there will be no ______ in the air. The