u4 t3仁爱九年级英语重点短语、句子汇总及语法精粹

Unit 4 Amazing Science

Topic 3 I don't think aliens can be found in space.

Ⅰ. 重点短语(词组)

u4 t3仁爱九年级英语重点短语、句子汇总及语法精粹

Ⅱ.单词(辨)解析

1、research 名词:研究、调查。例:He is engaged in research work. 动词:研究、调查。例:The man is researching into a problem. 2、search (1)动词:搜寻,搜索,搜查。如:

Tom searched his mind cut couldn't come up with the answer. 汤姆绞尽脑汁但想不出答案。 (2)search for 搜寻。如:The parents are searching for the lost child. 父母在寻找失踪的孩子。

{注意} search sb./sth. 与 search for sb./sth. 的区别:前者意为“搜某人身/搜某物”,后者意为“寻找,搜寻某人/某物(心情急迫)”。如: Firefighters searched the building for survivors. 消防员在建筑物中搜寻幸存者。 He searched desperately for something to say. 他搜肠刮肚,想找点话说。

(3)名词:搜寻,搜索,搜查。其常见搭配为:in research of sth. adv. 寻找。 如: She went into the kitchen in search of a drink. 她进了厨房想找点喝的。

3、当主句的谓语动词是 think,suppose,believe,imagine,expect 等,后接宾语从句中含有 not 的否定词时,否定词常要前移,即否定主句的谓语动词。

e.g. I don't think he is right. 我认为他不对。I don't believe he will come back. 我相信他不会回来。 4、alone 与 lonely 都可表示“单独的,寂寞的”。其区别为:

(1)alone 是“独自的”,指无人陪伴的客观事实,lonely 是“寂寞的”,指主观感觉;一个人可能 alone 而并不 lonely,也可能虽不 alone 而感觉 lonely。如:

He lives alone,but he doesn't feel lonely. 他独居,但并不感到孤独。 (2)alone 只作表语,不能作定语;而 lonely 可作定语或表语。

Ⅲ. 重点句子

1. We will be able to do anything that can be done on earth. 我们可以做在地球上能做的任何事情。 2. What fun! I can't wait. 太有趣了!我等不及了。

3. One American scientist thinks they have already come to the earth,and they are reading information on the Internet in order to learn about human culture.

一位美国科学家认为他们已经来过地球,并且正在互联网上阅读信息,以便学习人类的文化。 4. But I don't think aliens can be found in space. 但是我认为太空中没有外星人。

5. I won't believe there are aliens until I see them with my own eyes. 直到亲眼看到,我才相信有外星人。 6. Maria,have you heard the news about the space flight to Mars on TV? 玛丽亚,你从电视上听到有关太空飞行去火星的新闻了吗?

7. I'd like to be an astronaut when I grow up. 当我长大以后我想成为一名宇航员。

8. Let's work hard to make our dreams come true. 让我们努力工作,实现我我们的愿望。 9. This film is based on a science fiction story. 这部电影 改编于科幻小说。 10. A trip to the moon goes wrong. 登月旅行进展得不顺利。

11. Is this the beginning of the end for the earth? 这是地球尽头的开始吗?

12. ... and is named after Mars,the Roman god of war. 它是以罗马战神的名字火星而命名的。 13. Its diameter is 53% as wide as that of the earth. 它的直径是地球直径的百分之五十三。 14. Mars goes around the sun at a distance about 228 million kilometers. 火星在与太阳相隔大约两亿两千八百万千米的地方围绕其旋转。

15. The gravity on the surface of Mars is about two-fifths as strong as it is on earth. 火星表面的引力大约是地球表面引力的五分之一。

16. It takes a spaceship about eight months to reach Mars from the earth when the two planets are closet to each other. 当这两颗行星距离最近的时候,太空飞船从地球到火星要大约八个月。 {注意} 当形容词的最高级作表语时,定冠词 the 可以省略。

17. Scientists are still searching for more information about Mars. 科学家们仍在搜寻更多关于火星的信息。 18. It is/ has been two days since we landed on Mars. 自从我们登陆火星已经两天了。

[链接] It is/has been + since + 一段时间 + 瞬间动词的过去式 “自从 已经 (一段时间)了” * 四种表达“他父亲死了十年了。”

(1)It is/has been ten years since his father died. (2)His father has been dead for ten years.

(2)His father died ten years ago.

(4)Ten years has passed since his father died. (时间做主语时,看成一个整体,谓语动词用单数.)

19. What's worse,our water supplies were very low/limited. We had to limit the use of water during those days. 更糟糕的是,我们的水供给量是非常有限的,在那些日子里我们不得不限量用水。

20. I often miss the family,but the excitement of being on Mars is worth it!我经常想念家人,但火星探险的兴奋值得这么做! 21. Scientists think that there has been life on earth for millions of years. 科学家们认为在地球上生物已经存在了数百万年了。

22. Some spaceships have gone beyond the solar system. 一些飞船已经飞出了太阳系。

[链接] beyond prep. 在 之外,超出 (范围) e.g. There is a temple beyond the mountain. 山的那边有一座庙。 What happened was beyond my control. 发生的事情是我无法控制的。`

Ⅳ. 语法精粹——情态动词的被动语态

一、含情态动词的被动语态,其构成形式为:情态动词 + be + 及物动词的过去分词。如: Li Ming may be chosen as the monitor of our class. 李明可能当选为我们班的班长。

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