冀教版九年級(jí)英語上冊(cè)《Keep the Candle Burning》Look into Science! PPT優(yōu)秀課件，共25頁。
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打火機(jī)或火柴
match
① n. 火柴，復(fù)數(shù)形式為matches。
a box of matches 一盒火柴
② n. 比賽，復(fù)數(shù)形式matches。
three basketball matches 三場(chǎng)籃球賽
③ v. 相稱；相配
Your tie matches your suit. 你的領(lǐng)帶和你的套裝相配。
2. Examine the water in the jar. 檢查廣口瓶里的水。
examine v.
① 檢查。 后接名詞或代詞作賓語。
The doctor examined the patient.
那位醫(yī)生檢查了那位病人。
②考核，測(cè)驗(yàn)
Our teacher will examine us on history.
我們老師將測(cè)驗(yàn)我們歷史。
3.When the candle stops burning, it has used up all the oxygen in the air.
當(dāng)蠟燭停止燃燒時(shí)，它用盡了空氣中所有氧氣。
use up 用光；用盡（=run out of）
其主語往往是人，賓語往往是被用光的物。
Jim used up his money to buy the computer.
吉姆為了買電腦花光了所有的錢。
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