1、1Unit 5 Look into Science单词闯关1.火柴；相称；相配_2holder_(v.)_3shallow _4.lighter _(v.) _5examine _(n.)_6oxygen _短语互译1. 用光；用完_2由组成_ 3两三分钟_4how far _5. one fifth_句型在线1.倒半碟水。_ the dish half full _ water.2. 让蜡烛燃烧两三分钟。_the candle _for two or three minutes. 3当蜡烛停止燃烧时，它(蜡烛燃烧)已经用完了空气中所有的氧气。When the candle _ _， it h
2、as _ _ all the oxygen in the air.4.因为大约空气的五分之一是由氧气构成的，所以水上升并填满了大约广口瓶的五分之一。Because about one fifth of the air _ _ _ of oxygen, the water rises and fills about one fifth of the jar.5. 你能做这个实验吗？Can you _ _ _？ match n. 火柴 v. 相称；相配观察 He quickly struck a match to light his cigarette.他迅速地擦着一根火柴，点燃了他的香烟。探究
3、match作“火柴”讲时，是_名词。搭配：一根火柴_； 一盒火柴 a box of matches。拓展 (1)match 用作名词，还可译为“比赛” 。I like watching football matches on TV. 我喜欢通过电视看足球比赛。2(2)match还可用作动词，意为“相称；相配” 。常用结构：match (with) sb./sth. (in sth.)(在某方面)和某人/某物相匹配。Your scarf doesnt match (with) your sweater.Your scarf and sweater dont match. 你的围巾和毛衣不搭配。T
4、he picture matches the story.这张图片与这个故事相匹配。(1)门被漆成了蓝色，为的是与墙(的颜色)相配。The doors were painted blue _ _ the walls.(2)桌子上有两盒火柴。There are_ _ _ _ on the table. 1 When the candle stops burning, it has used up all the oxygen in the air. 当蜡烛停止燃烧时，它(蜡烛燃烧)已经用完了空气中所有的氧气。探究 (1)stop doing sth.意为“_” 。(2)use up 意为“_”
5、， 相当于 run out of。拓展 stop to do sth.意为“停止正在做的事情去做另一件事情” 。stop sb. from doing sth. 意为“阻止某人做某事” 。12017常州Why doesnt the surgeon stop_ lunch?Because he is too busy_ a dying patient in the operation room.Ato have; to save Bhaving; to saveCto have; saving Dhaving; saving2 Because about one fifth of the air
6、 is made up of oxygen, the water rises and fills about one fifth of the jar. 因为大约空气的五分之一是由氧气构成的，所以水上升并填满了大约广口瓶的五分之一。探究 (1)be made up of 意为“_” 。(2)one fifth 意为“_” 。分数的表达方式：分子用_词，分母用_词，当分子大于 1时，分母加s。 记忆口诀分子基，分母序；分子大于 1，分母加s。拓展 分数短语作主语时，谓语动词的单复数取决于分数后的名词的单复数。Two thirds of the students are boys in our c
7、lass. 我们班三分之二的学生是男生。22017安顺Mum, of the apples_ gone bad. Wed better eat up the rest as soon as possible.Aone third have Bone thirds have3Cone third has Dfirst three has4教师详解详析【课前自主预习】单词闯关1match 2支托物，持有者； hold3浅的 4打火机， 点火器； light5检查； examination 6氧气短语互译1use up 2be made up of3two or three minutes 4多远5. 五分之一句型在线1Fill; with 2Let; burn3stops burning; used up4is made up5do this experiment 【课堂互动探究】词汇点睛 可数； a/one match(1)to match (2)two boxes of matches句型透视1 停止做某事； 用光，用完C 2 由组成； 五分之一； 基数； 序数A
