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Unit 5 Look into Science
單詞闖關(guān)
1.火柴;相稱;相配________
2.holder________→(v.)________
3.shallow ________
4.lighter ________→(v.) ________
5.examine ________→(n.)________
6.oxygen ________
短語互譯
1. 用光;用完________________
2.由……組成________________
3.兩三分鐘________________
4.how far _____________
2、___
5. one fifth________________
句型在線
1.倒半碟水。
________ the dish half full ________ water.
2. 讓蠟燭燃燒兩三分鐘。
________the candle ________for two or three minutes.
3.當蠟燭停止燃燒時,它(蠟燭燃燒)已經(jīng)用完了空氣中所有的氧氣。
When the candle ________ ________, it has ________ ________ all the oxygen in the air.
4.因為大約空氣的五分
3、之一是由氧氣構(gòu)成的,所以水上升并填滿了大約廣口瓶的五分之一。
Because about one fifth of the air ________ ________ ________ of oxygen, the water rises and fills about one fifth of the jar.
5. 你能做這個實驗嗎?
Can you ________ ________ ________?
● match n. 火柴 v. 相稱;相配
[觀察] He quickly struck a match to light his cigarette.
他迅速地
4、擦著一根火柴,點燃了他的香煙。
[探究] match作“火柴”講時,是________名詞。搭配:一根火柴________________; 一盒火柴a box of matches。
[拓展] (1)match用作名詞,還可譯為“比賽”。
I like watching football matches on TV.
我喜歡通過電視看足球比賽。
(2)match還可用作動詞,意為“相稱;相配”。常用結(jié)構(gòu):match (with) sb./sth. (in sth.)(在某方面)和某人/某物相匹配。
Your scarf doesn't match (with) your sw
5、eater.
=Y(jié)our scarf and sweater don't match. 你的圍巾和毛衣不搭配。
The picture matches the story.這張圖片與這個故事相匹配。
(1)門被漆成了藍色,為的是與墻(的顏色)相配。
The doors were painted blue ________ ________ the walls.
(2)桌子上有兩盒火柴。
There are________ ________ ________ ________ on the table.
●1 When the candle stops burning,
6、 it has used up all the oxygen in the air. 當蠟燭停止燃燒時,它(蠟燭燃燒)已經(jīng)用完了空氣中所有的氧氣。
[探究] (1)stop doing sth.意為“________________”。
(2)use up 意為“________________”, 相當于run out of。
[拓展] stop to do sth.意為“停止正在做的事情去做另一件事情”。
stop sb. from doing sth. 意為“阻止某人做某事”。
1.2017·常州—Why doesn't the surgeon stop________
7、lunch?
—Because he is too busy________ a dying patient in the operation room.
A.to have; to save
B.having; to save
C.to have; saving
D.having; saving
●2 Because about one fifth of the air is made up of oxygen, the water rises and fills about one fifth of the jar. 因為大約空氣的五分之一是由氧氣構(gòu)成的,所以水上升
8、并填滿了大約廣口瓶的五分之一。
[探究] (1)be made up of 意為“____________”。
(2)one fifth 意為“____________”。分數(shù)的表達方式:分子用________詞,分母用________詞,當分子大于1時,分母加-s。
記憶口訣
分子基,分母序;分子大于1,分母加-s。
[拓展] 分數(shù)短語作主語時,謂語動詞的單復(fù)數(shù)取決于分數(shù)后的名詞的單復(fù)數(shù)。
Two thirds of the students are boys in our class.
我們班三分之二的學(xué)生是男生。
2.2017·安順—Mum, of the ap
9、ples________ gone bad.
—We'd better eat up the rest as soon as possible.
A.one third have
B.one thirds have
C.one third has
D.first three has
教師詳解詳析
【課前自主預(yù)習(xí)】
單詞闖關(guān)
1.match
2.支托物,持有者; hold
3.淺的
4.打火機, 點火器; light
5.檢查; examination
6.氧氣
短語互譯
1.use up
2.be made up of
3.two or three minutes
4.多遠
5. 五分之一
句型在線
1.Fill; with
2.Let; burn
3.stops burning; used up
4.is made up
5.do this experiment
【課堂互動探究】
詞匯點睛
● 可數(shù); a/one match
(1)to match (2)two boxes of matches
句型透視
●1 停止做某事; 用光,用完
C
●2 由……組成; 五分之一; 基數(shù); 序數(shù)
A
4