1、.牛津上海版8A U4本單元重點單詞梳理1. ancient adj. very old; from a time long ago很久以前的；古老的，古代的 e.g. The ancient Chinese wore different clothes from the modern Chinese. 中國古人與現代人穿的衣服完全不同。 I feel pretty ancient when I see how the younger generation behaves. 看到年輕一代的行為舉止，我覺得我太老了。【反義】modern adj現代的；現代化的2times 時代；時期 e.g.

2、In Shakespeare's times, not many people could read在莎士比亞時代，沒有多少人認識字。【近義】 age n. 時代 3as 像一樣，正如 e.g. She works in the same building as my sister.她和我的妹妹在同一大樓上班。4nearly 幾乎，差不多 e.g. I'm nearly 16 its my birthday next week. 我就快16歲了，下個禮拜是我生日。【指點迷津：almost, nearly】 兩詞意思均為“幾乎，將近，差不多，當與動詞、副詞、形容詞及名詞連用時，意

3、義相近，可互換。 e.g. It's nearly suppertime.= It's almost suppertime. 快開晚飯了。 almost可與no，none，never以及nothing等不定代詞連用，而nearly那么不可；nearly常用在含有not的否認句中，而almost那么不可與not單獨連用。 e.g. Theres almost no water left in the bottle. 瓶子里水快沒了。 It is not nearly so pretty as it was before. 這兒遠不及以前漂亮了。5. invent v. 創造，創造

4、 e.g. Who invented the plane? 誰創造了飛機？ Thomas Edison invented the electric light. 托馬斯·愛迪生創造了電燈。【知識擴展】 inventor n. 創造者；創造家 invention n.創造，創造物 Tomas Edison was one of the greatest inventors who invented a lot of things in his life. 托馬斯·愛迪生是一生中創造了許多東西的偉大創造家之一。 His 6,000 inventions included the

5、 electric light bulb, the phonograph, and the mimeograph machine. 他的六千項創造中，包括電燈泡、留聲機和油印機。6. calculate 計算 e.g. Can you calculate how much a holiday will cost? 你能否計算一下度個假要花多少錢？【知識拓展】calculator n. 電子計算器 e.g. A calculator is a calculating machine which helps people to calculate faster and more accuratel

6、y. 計算器是一種幫助人們用來更加快速、準確計算的機器。7. electronic 電子的 e.g. electronic typewriter電子打字機 electronic watch電子表 electronic music電子音樂 Don't use an electronic dictionary in your English study. 在你的英語學習中不要使用電子詞典。8. add 加 e.g. If you add 4 to 5, you get 9. 四加五得九。 Add up these figures, please. 請把這些數字加起來。【友誼提示】在進展加法

7、的描繪時，我們常常說4 plus 3 equals/is 7，但千萬不可用add去代替plus, add是個動詞，而plus是個介詞。9. subtract 減 e.g. If you subtract 3 from 8, you get 5. 八減去三就得五。【友誼提示】我們同樣也不能用subtract去代替minus。上面這句話我們換種方式說就是8 minus3 equals/is 5.10. multiply 乘 e.g. 6 multiplied by 5 is 30. 6乘5等于30。 If you multiply 6 by 5, you get 30. 你用5去乘6，得到30。1

8、1. divide除；除盡 e.g. 30 divided by 6 is 5. 30除以6等于5。 If you divide 30 by 6, you get 5. 假如你把30除以6，就得到5。 Three will not divide into eleven. 3除不盡11。12. percentage 百分數；百分率；百分比 e.g. 40% is a percentage. 40%是個百分數。13. powerful 強大的；強有力的; 有力量的 e.g. The car has a very powerful engine. 這輛車有強勁的引擎。 The president i

9、s very powerful. 總統享有很大的權利。14. against 對著，對立；不喜歡，反對，防止，預防；靠著，倚著 e.g. They played a football match against a team from another country. 他們跟另一個國家的足球隊比賽。 Many people are against the plan很多人都反對這個方案。 Have you had an injection against the disease? 你注射過針對這種疾病的預防針了嗎？ Put the cupboard against the wall. 把這個櫥柜

10、放在靠墻的地方。15. living 活著的 e.g. Some people say he is the greatest living writer. 有人說他是健在的最偉大作家。【指點迷津 alive, live和living】 1通常情況下，alive作表語be alive，而living 一般放在名詞前作定語用。 e.g. That great man is still alive. 那個偉人仍然活著。 all living things 一切生物 Latin is not a living language。拉丁語不是現代語言。2live也是“有生命的，活著的之意，但往往指動物。

11、e.g. a live fish 一條活魚 此外live還有“現場直播的意思。 e.g. a live show現場直播的節目。16. amazing 令人驚奇的 e.g. What an amazing embroidery!多么了不起的一幅刺繡作品！It's amazing that you can't ride a bike你不會騎車可真令人驚訝。【知識拓展】 amaze v. 使吃驚 amazed adj. 吃驚的，驚奇的 e.g. Jack amazed everyone by passing the English exam. 杰克通過英語考試使我們每個人感到驚訝。

12、 We were amazed by his change in his study. 我們為他在學習中的變化而感到吃驚。 【友誼提示】 amaze的形容詞有兩個，一個是amazed，一個是amazing，但用法不同，通常人做主語時用amazed，物作主語時用amazing。 e.g. It is an amazing game. 這真是一場令人驚奇的比賽。 I am amazed by his words. 我對他的話感到吃驚。【例題】 用amazed, amazing填空 11 think it is an_ animal. 21 am_ how big the school is. 【答

13、案】 1 amazing 2amazed17. instruction說明，指示，指令 e.g. Read the instructions on the box before you make the cake.制作蛋糕之前請閱讀一下盒子上的說明。【例題】 -I don't know how to use this digital camera. -It doesn't matter. Here is the， A. instruction B. direction . C, information D. advertisement 【答案】 AII本單元重點詞組decima

14、l number小數 a pair of odd numbers一對奇數at least至少 international language國際語言 in ancient times在古代 in many different ways用很多不同的方法 in tens以十為計；十進制 consist of由組成；由構成 calculating machines計算器 so that如此以致于 in a flash一瞬間 do a calculation計算 in ones whole lifetime終身 living computer活電腦 an amazing brain驚人的頭腦 solve

15、 the problem解決問題 find the answer得出答案 be made up of 由組成 【小試牛刀】I. Fill in the blanks with the words in their proper forms.1.Qian Xuesen is a Chinese scientist and he has an _ brain. amaze2. The sports car has a very _ engine. power3.Are there any_ things on the moon? live4.At_, I tried my best to help

16、 the lady, little5.Study the _ pictures carefully and write an essay, follow6.It is an old _ machine that is still used today. calculate7.The steam engine is an important_ in the history. invent8.It is _ for me to use the computer to do a calculation. easily【keys】1. amazing 2. powerful 3. living 4.

17、least 5. following 6. calculating 7. invention 8. easy. Key phrases and sentences.1.because it made it easier to write big numbers and to calculate因為它0使得大數字的書寫和計算更加容易。 1 because conj因為 e.g. I was angry because he was late. 因為他遲到了，所以我生氣。【指點迷津】because, since, as, for 都是表示“原因的連詞。以上連詞的語氣由強至弱依次為because s

18、ince as for; 其中because，since，as為附屬連詞，引導原因狀語從句; for為并列連詞，連接兩個并列句。 Because“因為"，表示直接原因，答復why的提問，一般放在主句之后，可單獨存在。 e.g. -Why don't you buy it? 為什么你不買它？ -Because I don't have enough money with me因為我沒有帶足夠的錢。 We stayed at home because it rained下雨了，所以我們待在家里。 since “因為，既然，側重主句，從句表示顯然的或的理由。 e.g. Si

19、nce everyone is here，let's begin. 既然大家都到齊了，我們開場吧。 as“由于，鑒于，主從句并重，從句說明原因，主句說明結果，為常用詞。 e.g. As it was late，I must hurry up由于晚了，我得快點。 for“因為，由于，說明附加或推斷的理由，其前常有逗號，for及其后的句子不放在句首。 e.g. He must be ill，for he isn't here today他一定是病了，因為今天他沒來。【友誼提示】“因為所以的英漢不同習慣: because和so 與although和but用法一樣，都不可連在一起使用，

20、只能用其中一個，這一點和漢語不同，使用時一定要注意兩種語言的不同習慣。 因為他病了，所以他沒來上學。 誤Because he was ill, so he didn't come to school. 正Because he was ill, he didn't come to school. 正He was ill, so he didn't come to school. 2 make it+adj. + to do sth使得做某事變得e.g. The electronic dictionary makes it quicker to look up a new

21、word. 電子詞典使我們查閱生詞更迅速。2Abacuses are so fast and accurate that people still use them today算盤計算起來是如此的快速和準確，因此人們至今還在使用它們。 sothat“如此以致于，引導結果狀語從句，so后接形容詞或副詞，that后面接從句。 e.g. The box is so heavy that I can't carry it這個箱子如此的重以致于我抬不動它。 He runs so fast that his classmates can't catch up with him. 他跑得如此

22、快以致于他的同學都趕不上他。【友誼提示】當that后面的從句為否認句時，可以用tooto改寫為簡單句，當that后面的從句為肯定句時，可以用enough to改寫為簡單句。 e.g. He is so young that he can't go to school. =He is too young to go to school他太小了，還不能去上學。 He is so tall that he can reach the apples on the tree. =He is tall enough to reach the apples on the tree他很高可以得到樹上的

23、蘋果。 so后面有單數名詞時可用such .that進展改寫。 e.g. He is so tall a man that he can almost reach the ceiling. =He is such a tall man that he can almost reach the ceiling他個子這么高，幾乎夠得著天花板。【知識拓展】 so that的用法1 so that以便; 目的是。引導目的狀語從句 e.g. Our teacher spoke loudly so that everyone could hear him. 我們的老師大聲講課以便每個人都能聽到。 So t

24、hat 常與may，can等詞連用，從句前無逗號。e.g. I hired a boat so that I could go fishing. 我租了一條船，為的是可以去釣魚。 He worked hard in order that/so that he could succeed. =He worked hard in order to/so as to succeed. 他努力工作，為的是成功。 2 so that還可引導結果狀語從句，從句前可用逗號與主句隔開，意為“因為。 e.g. The bus broke down, so that we had to walk. 公共汽車拋錨了

25、，因此我們必須步行。【例題】1 Please speak aloud _ everyone can hear what you are saying. A. such that B. so that C. so as to D. so that 2 He works so _ that he finishes the work well. A. hard B. harder C. careful D. hardly 【答案】 1B 2A3. Is a human brain a more powerful calculator than a computer?人腦是比計算機更強大的計算器嗎？

26、1 more+adj. +than e.g. Is this snake more dangerous than that one? 這條蛇比那一條更危險嗎？ 2 more+n. +than e.g. There are more students in Class 3 than those in Class 2. 三班的學生比二班的多。4If it is not powerful enough, you will find the answer on page 67假如它你的大腦不夠強大的話，請看第67頁上的答案。 主句為一般將來時，以if引導的條件狀語從句，那么用一般如今時。 e.g. I

27、f I am free tomorrow, I will see my uncle. 假如明天我有空，我要去看我叔叔。 If it doesnt rain, we will go swimming假如不下雨，我們將去游泳。【隨堂小練】I. Choose the right words or expressions to complete the sentences.1.Mice will run away _ a flash if they see a cat. on/in2.Jenny White is a great girl_ a surprising brain. has/with3.

28、 _ In/At ancient times, people used abacuses to calculate and they nearly all counted _ tens. for/ in4.Sometimes you can't solve a problem _ your whole lifetime. in/on5.Nowadays, most of us can speak_ least two languages. in/at【keys】1. in 2. with 3. In; in 4. in 5. atII. Find the word or express

29、ion to replace the underlined part in the sentence.A. in a short time B. finished C. solve D. accurate E. nearly 1. How to settle the problem is really a test for these children. 2. It is said that the project is to be completed in 2 years. 3. It is a mistake they almost always make. 4. The young bo

30、ys ran out of the classroom in a flash. 5. The calculations made by the computer are always correct.【keys】CBEAD【技能進步練】I. Read and choose the best answer. 1. Do you think numbers are an _ language in the world?A. international B. strange C. special D. interesting 2. The new fridge cost me two_ dollar

31、s.A. hundred of B. hundreds of C. hundreds D. hundred 3. Unluckily, _ of the students in our class had a cold last week.A. one-three B. one-thirds C. first-three D. one-third 4. We can solve the technology problem_ different ways.A. on B. in C. with D. of 5. Don't worry. There is _ time left now

32、.A. a little B. little C. a few D. few 6. The boy ran away_ lightning after he broke his neighbour's window.A. as B. like C. likes D. in 7. Subtract 3 _ 20 and you will get 17.A. from B. and C. by D. to 8. In ancient times, people_ numbers in different ways.A. write B. wrote C. writing D. writte

33、n 9. Sue, _ late for school again.A. doesn't be B. isn't C. don't be D. being 10. Nowadays computers are_ fast and cheap.A. then B. or C. while D. so【keys】ADDBA BABCDII. Rewrite the sentences as required.3. We had to go to school last Saturday. 改為否認句We _to go to school last Saturday.2.Sh

34、e has already written a letter to his father. 改為一般疑問句_ she_ a letter to her father_?3.Tommy will use his computer programs to solve the problem. 改為否認句Tommy _ _ his computer programs to solve the problem.4.He has already told me the good news. 改為否認句He_ _ me the good news yet.5.We will have a meeting

35、at 1:00 p. m. 就劃線部分提問_ will you have a meeting?6.The old man was so weak that he couldn't walk by himself. 保持原句意思The old man was _ weak _ walk by himself.【keys】1. didnt have 2. Has written; yet 3. wont use 4. hasnt told 5. When 6. too to.Choose the words or expressions and complete the passage.I

36、n northern China during spring, big sandstorms often make trouble for people. Sandstorms usually happen in spring. This year, sandstorms started in late 1 They have happened in more than 10 provinces in northern China this year. More than 70 million people have had problems in those places 2 the sto

37、rms.People in southern China don't have to 3 this kind of bad weather. Most of the sand come from Gansu and Inner Mongolia. In northern China, lots of places have few trees and don't get 4 People there have been cutting down too many trees. When there aren't many trees, the ground can

38、9;t keep enough 5 . Over the years, the ground dries up and turns to sand. When spring comes and the ice melts, the ground becomes looser. Strong wind takes the loose sand into the sky. 1. A. October B. July C. December D. March 2. A. instead of B. because of C. such as D. just like 3. A. know aboutB. think about C. worry about D. talk about 4. A. much rain B.much land C.large population D. many chances 5. A. water B. animal C. area D. sand. Read the passage and tell the following statements are trueT or falseF.Most crop circles 麥田怪圈 are in the south of