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some water
a lighter n.（打火机）or matches
n.（火柴）
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.Let the candle burn for two or three minutes.Then carefully put the jar over it until the top of the jar _____on the dish.As the candle burns,it_____the oxygen in the air.When the candle stops_____,it has_______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______________oxygen.
match
rests
uses
burning
used up
one fifth
rises
Is made up of
Do the experiment
be made of由……制成 eg. The cup is made of glass.
be made up of 由……组成 eg. Our class is made up of 45 students.
be made of 与be made up of
易混淆知识点
rise 与raise
rise v.升起，提高，上涨eg. The sun rises in the east.
raise v.举起/升高/饲养/筹集 eg, raise money.
Fill …with 用……装满
be full of/ be filled with 充满/装满……
温馨提示
rest n. 休息 have a rest
rest v. 接触
not … unti 直到 …… 才
use up/run out of … 用光……
1. Because about one fifth of the air is made up of oxygen.
one fifth 五分之一 八分之三 ___________九分之六________