《2016年仁爱英语九年级unit_4_topic_2_重点知识点》由会员分享，可在线阅读，更多相关《2016年仁爱英语九年级unit_4_topic_2_重点知识点（7页珍藏版）》请在金锄头文库上搜索。
1、1Unit 4 Amazing ScienceTopic 2 Im excited about the things that will be discovered in the future.1重要句型：Section A1. A wonderful movie will be shown tonight.一场精彩的电影将在今晚上映。Houses, schools and hospitals will be built on Mars .房屋、学校、医院都将被建在火星上。两句划线部分均为将来时态的被动结构。将来时态的被动结构为：will / be going to + be v.ed练一练：
2、a).Dont worry. You _plenty of time to work it out.A.will give B.have given C.will be given D.are givenb).We are glad a famous writer_ to our school to give a talk next week.A.Invites B.invited C.will be invited D.was invited2. And they can visit planets like Mars. 他们还能访问像火星一样的星球。like 与 as 的用法区别： A.
3、like 说明相似关系，即两者在形态、性质上的相似，但不等同。He has done a lot of good things like Lei Feng. 他像雷锋那样做了很多好事。B. as 说明同一关系，指身份，意为“作为，当作”。Dont treat me as a child. Im 15. 别把我当小孩子，我已经十五岁了。C. as 还有 “像，按照”的意思。Please do it as I do as I tell you. 请照我的吩咐去做。3. We will be able to do anything that can be done on the earth.我们将能
4、在地球上能做的任何事。（1）be able to+动词原形意为“能，会”,常用于一般现在时、过去时、将来时和完成时时态。它的同义词是 can,但它仅有一般现在时和过去时态。在 shall,will, have 后面，要用 be able to。He is able to cook. = He can cook. 他会煮饭。练一练：Everyone _ read many English articles so far.A.can B.have C.was able to D.has been able to（2）that can be done on the earth 定语从句修饰 anyt
5、hing。从句的谓语动词的是带有情态动词的被动语态，构成形式“情态动词+be+及物动词的过去分词”。Trees can be planted in spring.树可以在春季栽种。4. What fun! 多么有趣啊！ 这里的 fun 为不可数名词，意为“有趣的事”。类似的感叹句： What a pity! = What a shame! 多么遗憾啊！5. they are reading information on the internet in order to learn about human culture. in order to . 意为“为了”,表示目的，后接动词原形，相当于
6、 so as to。in order to 即可放在句首也可放在句中；so as to 只能放在句中，不能放在句首。 它们的否定形式都是在 to 前加 not, 即 in order not to , so as not to。In order not to fail the exam,he studied for fourteen hours everyday. 为了考试不失利，他每天学习 14 小时。2She went to England last year in order that / so that she could learn standard English. 她去年去了英国
7、，为的是学习标准的英语。6. But I dont think aliens will be found in space. 但是我认为在太空中找不到外星人。（1） 当 think, believe, suppose, imagine, expect 等动词后接的宾语从句含有 not 等否定词，且主语为第一人称时，该否定应移至主句，即否定主句的谓语动词。I dont think it will rain tomorrow. 我认为明天不会下雨。（2） 当主句的主语是第二、三人称时，否定式一般不转移。 He supposes they wont win the game. 他猜想他们赢不了比赛。
8、（3） 改写成反意疑问句时，当主句的主语为第一人称时，反义疑问句的主、谓与从句一致。I dont think it will rain tomorrow,will it? 我认为明天不会下雨，是吗？（4） 如果主句的主语是第二、三人称时，反义疑问句的主谓与主语一致。He thinks he can make it, doesnt he? 他认为他能办到，是吗？Section B1. They will travel into space and discover something new about Mars. 他们将遨游太空，发现与火星有关的新事物。 A. discover v. 发现（找
9、到原本存在但未被发现的东西）； Columbus discovered America in 1492. 哥伦布在 1492 年发现了美洲。 B. invent v. 发明（发明的对象是以前从未存在的新东西）；The inventor invented a lot of things all his life. 这位发明家一生发明了很多东西。C. find v. 多指偶然发现、碰到，后可接名词、复合结构或 that 从句。强调“找”的结果。Have you found the book you have been looking for?你找到那本你一直在找的书了吗？D. find out 指
10、通过观察、探索而发现秘密、错误等，后一般接名词或是从句。 Have you found out why he was late? 你弄清他为什么迟到了吗？E. look for 强调“找”的过程。Im looking for my watch, but cant find it. 我在找我的手表，但没找到。2. But I prefer science to dance. 但同跳舞相比，我更喜欢科学。常用结构：a. prefer sth.to sth. 与某物相比，更喜欢某物；I prefer apples to bananas. 与香蕉相比，我更喜欢苹果。b. prefer doing st
11、h. to doing sth. 与做某事相比，更喜欢做某事；I prefer playing basketball to swimming. 与游泳相比，我更喜欢打篮球。c. prefer to do sth. 愿意做;I prefer to go at once.我愿意马上就走。d. prefer doing sth. 宁愿做某事，更喜欢做某事；I prefer going by bike.我宁愿骑单车去。e.prefer to do rather than do sth.宁可做而不做，喜欢做 而不做He preferred to die rather than (to) steal.他宁
12、死也不去偷窃。3. Im excited about the things that will be discovered in the future.我一想到将来可能被发现的东西就很兴奋。be excited about 意为“对 很兴奋”,excited 为形容词。that 是连词，引导定语从句。练一练：a).Well feel_ about a long winter holiday well spend this year. A.pleased B.interested C.amazed D.excited b).I dont like stories_ have unhappy en
13、dings.3A.who B.that C.where D.those Section C1. Its diameter is 53% as wide as that of the earth.它的直径是地球直径的 53%。 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二。（1）two-fifths as strong as. 相当的五分之二强度；two-fifths = two fifths 五分之二。 （2）倍数词/分数/百分数a
14、s 形容词或副词原级as. 的几倍/几分之几 /百分之几； 练一练：We have two ears and one mouth so that we can listen _ we speak. A.as twice much as B.twice as much asC.as much as twice D.as much twice as2. Mars goes around the sun at a distance of about 228 million kilometers.火星在相隔大约 2亿 2 千 8 百万千米的地方绕着太阳旋转。A. at a distance of 相隔
15、； The moon goes around the earth at a distance of 380000 km. 月球在距地球 38 万千米的地方绕地球旋转。B. at a distance 在远处；The police followed him at a distance. 警察远远地跟着他。3. But during spring and summer, the surface of Mars is covered by strong storms. 但在春、夏两季，火星表面会被强烈的风暴所覆盖。 A. be covered 被覆盖；The snake was covered by
16、 the earth. 这条蛇被土盖住了。B. be covered with 遮盖，遮蔽；The ground is covered with snow. 土地被雪覆盖。4. It has been two days since we landed on Mars. 自从我们登上火星已经两天了。相当于 We have been on Mars for two days. 这里的时间 two days 的计算是从从句的动作 land 完成后算起的。Its six weeks we had a proper shower last time. = We havent had a proper shower for six weeks. 我们已经六个礼拜没有像样地洗澡了。Section D1. Scientists
