新译林版九年级下册英语 Unit 4 Reading II课件

1、Unit 4 Life on MarsReading 新课讲解1. At present, our spacecraft are too slow to carry large numbers of passengers to Mars. 目前，我们的宇宙飞船太慢了，无法运送大批的乘客去火星。Language pointsLarge numbers of 表示“大量的”= a large number of Large numbers of people go travelling during the National Day holiday. 新课讲解2. With the develop

2、ment of technology, by the year 2100, the journey might only take about 20 minutes in spacecraft that travel at the speed of light! 随着技术的发展，到2100年，乘坐以光速飞行的宇宙飞船，行程或许只要大约20分钟！I was second in theracewith atimeof 14.2seconds. 介词with短语，在句中常用作状语，表示原因、条件、时间、伴随、方式等。我以14.2秒的成绩在比赛中位列第二。新课讲解By thetimeI got to

3、the station the train had already gone. by 表示“到%为止，截止 ”等我到达火车站时，火车已经开走了。 at a/the speed of 表示“以的速度”The car is moving at a speed of 100 kilometres per hour.小汽车正以每小时100千米的速度行驶。新课讲解3. The gravity on Mars is only about three-eighths of that on the Earth.火星上的重力大约只有地球上的八分之三。The air on Mars is much thinner

4、 than that on the Earth.在做比较时，我们常用that/those指代句中类似或相同的那一部分。此句中that指代前面的gravity.火星上的空气要比地球上的稀薄的多。新课讲解Three-eighths 八分之三分数在英语中通常是借助于基数词和序数词来共同表达的。其中基数词表示分子，序数词表示分母。如：one-tenth 十分之一a third 三分之一注意：分子除用one外，也可用a；新课讲解two thirds 三分之二four fifths 五分之四但是，1/2不能说a (one) second, 而要说 a (one) half。1/4和3/4可以说 a (on

5、e) fourth 和 three fourths, 但常用a quarter 和 three quarters表示。如果分子大于1， 分母要用复数形式。如：当堂小练 选择题。About _ of the students are from foreign countries. A. three four B. three fourthC. third fourth D. three fourths翻译句子。我们班五分之三是女生。_ the students in my class _ girls.practice Three-fifths ofare新课讲解4. Compared with

6、life on the Earth, life on Mars would be better in some ways.与地球上的生活相比，火星上的生活在有些方面要好些。Childrenseemtolearnmoreinterestingthings comparedto/with when we were atschool. compared with 表示“与相比”此句中的 “compared with the life on the Earth” 为 v-ed短语作状语。与我们上学时相比，孩子现在学到的有趣东西似乎更多一些。 新课讲解拓展：compare . to 意为“把比作”。Sh

7、akespeare compared the world to a stage.莎士比亚把人世比作舞台。 用compare with 和 compare to 的正确形式填空。1.He cannot _ Shakespeare as a writer of tragedies.2. You cannot _ this war _ the Vietnam war (越南战争).practice compare withcompare to新课讲解5. Life on Mars would be interesting as well as challenging.火星上的生活，不仅有挑战性，还很

8、有趣。IwanttovisitAndrew as wellasMartin. as well as 意思为“不但而且”我想去拜访安德鲁，还有马丁。 Sheshares(in)mytroublesaswellasmyjoys.她与我同甘共苦。 当堂小练I. 用括号内所给词的适当形式填空。 There is less air _ (pollute) in town that in the city.2. Look at the newest T-shirt. Its made of cotton. I think it will become _ (fashion) this summer.3.

9、Its _(high) possible that people can live on Mars in the future.4. Grandma is too old _ (settle) on another planet. 5. The helmet is made of metal. Its too heavy. When I wear it, I feel _ (comfort).pollution fashionablehighly to settleExercisesuncomfortable 当堂小练6. My father cooks very well. The food

10、 he cooks is as _ (taste) as that in the restaurant.7. Here are many kinds of moon cakes for you _ (choose) from.tastyto choose 8. _ (compare) with what he had already, the new stamps were not very interesting.9. _ (hope), doctors have found a new way to operate on the patients - flying hospital.10.

11、 We should keep water from _ (be) polluted.Compared Hopefully being当堂小练II. 翻译下列句子。1. 火星上的重力大约只有地球上的八分之三。The gravity on Mars is only about three-eighths of that on the Earth.2. 火星上的生活，不仅有挑战性，还很有趣。Life on Mars would be interesting as well as challenging.当堂小练III. 阅读小短文，回答下列问题。True or false.1. There was liquid water on Mars long ago.2. The writer is sure that