人教版必修三Unit4　Astronomy：thescienceofthestarsUnit4SectionⅢ.ppt

Section Ⅲ　Learning about Language Using Language;Ⅰ.Read the passage and choose the best answer. 1．The passage mainly talks about ________. A．what the moon is B．my visit to the moon C．the differences between the earth and the moon D．Li Yanping，my friend，who is an astronaut;2．When we were going up，we felt ________. A．we were pressed against our seats B．we were lighter than we are on the earth C．as if we were flying D．the rocket was shaking strongly;3．Why can’t the spaceship fall back to the earth? A．Because the moon’s gravity pulls it up. B．Because it is too far away from the earth. C．Because the earth has no gravity. D．Because the spaceship is not very heavy.;4．When I was on the moon I felt I was ________ than I am on the earth. A．slower　　　　　 B．heavier C．cleverer D．lighter 5．If a baby is growing on the moon，when he grows up，he will grow ________ than he is on the earth. A．taller B．shorter C．fatter D．Thinner 答案：1～5.BABDA;Ⅱ.Read the text(P30～31)carefully and fill in the blanks.;Periods;While landing on the moon;When leaving the moon ; 答案：1.pushed back　2.pull　3.weight　4.the moon’s gravity　5.less　6.twice　7.practice 8.painful 9.frightening　10.increased;1As a result of this event，a great dust cloud formed in the sky blocking out the sunlight. 由于这一事件，一团巨大的尘埃在空中形成，并挡住了阳光。;②Police blocked out the street after the explosion. 在爆炸发生之后，警方用路障封锁了那条路。 ③Over the years she had tried to block out that part of her life. 多年来，她努力想把生命中的那段经历从记忆中抹去。 自我探究 block out挡住(光线)；堵住；忘掉。;归纳拓展 block n.大块；(木、石等)块；街区；路障　vt.阻塞；阻挡, block off 封闭；封锁, block up 阻挡；堵塞;牛刀小试 完成句子 As the only entrance to the valley ________(被阻塞)by fallen rocks，we couldn’t gain access to the village to rescue the trapped people. 答案：was blocked;2Other scientists believe that a comet crashed into the earth long ago and caused the disappearance. 其他的科学家们相信很久以前一颗彗星撞到地球上，这导致了恐龙的消失。 品味经典 ①The plane crashed in the mountains. 那架飞机在山中坠毁了。 ②How did you crash my car? 你是怎样撞到我的车的？;③Forty one people were killed in a plane c