3. Read Aloud Modern agriculture

4. Useful Expressions  独户单干  随着时间的推移  利用  引进  国际交流  对 … 友善  依靠  保护 … 免受 …  与 … 不同  以 … 而闻名  换句话说  代表  做 … 研究  种种的，多种的  one-family business  over time  make use of  bring in  international exchange  be friendly to  depend on  protect … from  be different from  be known as  in other words  stand for  do research  a variety of /varieties of

5. 对 … 产生影响 养牛羊 在 20 世纪 90 年代 在早期 违背自然 导致 把 … 变成 … 耕地 近 100 年来 have effects on raise sheep and cattle in the 1990s/1990’s in early times go against nature lead to change into arable land/soil in the last 100 years

6. Key points in Unit 19 1. over “ 在 …… 期间 ” ，指直到某一时间终了 P45 Will you be at home over Christmas? Over the years he's become lazier and lazier. Our farm has gathered in good harvests over the past few years. “ 一面， …… 一面 ” ， 指正在进行 …… 的过程中 Tom was so tired that he went to sleep over his work. Let's have a talk over a cup of tea.

7. They had a pleasant chat ___ a cup of coffee. (NMET 2003) A.for B. with C. during D. over You’d better stay ___ Sunday. Don’t be so anxious to go. A. over B. till C. after D. on D A

8. What is it, do you think? 2. do you think e.g. Where do you think our English teacher comes from? Who do you think the old lady is? do you think / believe / consider / suppose / imagine / guess / say / suggest be afraid /sure / glad / certain / surprised / pleased P43

9. Who are you sure will get the first place in the examination? e.g. What can you guess made us so worried? Where did they suggest we should go during the summer holidays? Who do you think will win in the game? What time does the letter say he will start? What was he afraid would cause his failure?

10. * --- I haven't heard from Herry for a long time. --- What do you suppose _____ to him? A. was happening B. to happen C. has happened D. had happened --- What do you think the ocean bottom is made up of? --- I think it is made up of irregular plains. or: It is made up of irregular plains, I think. C 3. possible adj. e.g. He arrived at the worst possible time. P45

11. Hold your breath for as long as possible. 5. as...as possible This new method was brought in from the Western countries in the 1990s. 6. where possible = where it is possible Fill in the words in the blanks where necessary. Come to see her when possible. 7. bring in = to use the skills of a particular group or person. We need to send the letter off as soon as possible.

12. Use an umbrella to protect yourself from the rain. 8. depend on … The country depends heavily on foreign aid. 9. as well as … Bill can speak English as well as French. Tom is clever as well as healthy. not only... but also... Bill can speak not only French, but also English. 10. protect from... He wore a pair of sunglasses to protect his eyes from the sun. It all depends. P46

13. = After finishing your homework, you can help me with the farmwork. 11. a variety of = various, all kinds of The shop has a variety of toys. She showed a variety of flowers. = She showed various flowers. 12. discovered by... = which was discovered 13. before sowing or planting crops = before you sow or plant crops, conj. After you finish your homework, you can help me with the farmwork. P48

14. * happen vi. take place break out occur vi 14. happen vi. Strange things are happening. Things of that sort are happening all over the world every day. How did the accident happen? It is said that the traffic accident occurred at midnight. If anything happened to him, let me know. The contest took place yesterday. A fire broke out during the night.

15. * happen on / upon... happen upon sb. in the street * sb. + happens + to do sth. It ( so ) happens + that - clause I happened to be there when the fire started. I happened to be at the station when he arrived. Do you happen to know his address? It so happened that the famous actor was her brother. = The famous actor happened to be her brother.

16. * The conference had been held to discuss the effects of tourism ___ the wildlife in the area. A. in B. on C. at D. with 15. effect n. C / U have an effect on sb. / sth. have a good / bad effect on sb. / sth. e.g. It will have much effect. Scolding sometimes bring about an adverse （有害的） effect on a child. The medicine had a good effect on me. The children were suffering from the effects of the hot weather. B P43

17. in Shakespeare's time in Queen Victoria's time the feelings of the time 16. times n. pl. Times have changed, and we shouldn't fall behind them. What wonderful times we live in! We had terrible times during the war. * time n. sing.

18. They moved about when they lived in the countryside. 17. move around / about I can hear somebody moving around upstairs. She is moving around in the dressing room. He is a great traveller and has moved about all over the world.

19. They seemed to be too nervous and were too anxious to leave. 18. too... to... 1) too + adj. / adv. + to do sth. You are too young to understand such things. The problem is too difficult for me to work out. I've been too busy to find time to answer that letter. 2) too + adj. + to do sth. 表心情的 adj ： ready, glad, pleased, surprised, delighted, happy, easy, easy, eager, thankful, anxious, willing, etc. 描述性的 adj ： good, kind, true, etc. He was too surprised to see how angry Mary was. （表示否定意义） （下列情况表示肯定意义） P44

20. She will be only too pleased to help you. 3) only / but / all / simply / just + too... to... They are all too satisfied to take the opinions of others. English is not too difficult to learn. 4) not / never + too... to... too... not to... She is too careful not to have notice it. It is never too late to learn.

21. = You can never be too careful to ride in the street. *5) --- I was riding along the street and all of a sudden, a car cut in and knocked me down. --- You can never be ____ careful in the street. A. much B. very C. so D. too D can never + v. + too + adj. + to do sth. （干某事）越... 越好

22. They hope to destroy us one by one; they shall fail. 19. damage vi. & vt. 损害； 毁掉 Smoking can damage your health. This lock is damaged. This door will never open. China damages easily. n. C damage to Frost caused heavy damage to the crops. His careless remark did damage to his reputation. What's the damage? = cost * destroy vt. Many lives were destroyed by the earthquake. An explosion destroyed the building.

23. make money / make good money make war 20. make a decision = arrive at / come to / reach / take a decision * make an attempt make a change make a demand make an effort make a face / faces make a fire make a guess make a meal make a mistake make a noise make progress make a request make a statement P44

24. Many great men have risen from poverty --- Lincoln, for example. 21. such as for example I visited several cities such as New York, Chicago and Boston. He knows several languages, such as English, French and German. I have three friends, that is / namely, John, Jack and Tom. Some students, for example, John lives in the neighbourhood.

25. out of use find a use for 23.make use of make full / good / the best use of You should make the best use of this chance. He made use of his free time to learn French. You should make full use of time. He does not do well because he doesn't make the most / best of his ability. be in use be of great use put...to use come into use get use of have no use for with use

26. * be + adj. friendly, next, good, polite, kind, cruel, rude, known, married, close, near, similar, due + to 24. be harmful to... Your smoking can be harmful to the health of your children. Much of this waste is harmful to the environment. * do... harm = do harm to... The typhoon did great harm to the rice crop. He didn't want to do her any harm.

27. We stand firmly for peace against war. 25. stand for 1) 代表，象征 In this secret code each number stands for a letter of the alphabet. 2) 容忍、容许 （常用于否定句中） I will not stand for behaviour of that kind in my house. 3 ）拥护，为...... 而斗争

28. 26. in other words In other words, she must give up singing. I'm not used to the way you speak to me. In other words, I don't want to continue our conversations. Beethoven wrote many world-famous musical compositions. In other words, he was a great musician. * in word 在口头上， 句末，句中 in words 用语言（来表达）， 句末 in a / one word 简言之，总之， 句首，句中 I don't want you to tell me only in word that you will study hard.

29. * Your performance in the driving test didn't reach the required standard --- _____, you failed. A. in the end B. after all C. in other words D. at the same time C You don't know how wonderful it is. It can't be described in words. In a word, we must do our best to do the work.

30. The game is going against the visiting team. 27. go against 1) 违背, 违反 She went against her father's will. It goes against my wishes to leave the country. If you go against nature, you will be punished sooner or later. 2) 对...... 不利 Luck has gone against him. The case may go against us.

31. * almost 比 nearly 所表示的意思更加接近. 28. nearly adv. 几乎, 差不多, 一般情况下可和 almost 互换, 常用来修饰表示感觉、心境的动词和形容词, 也 可用来指时间、 空间、程度的相差无几。 He almost / nearly knocked me down before he saw me. Tom almost / nearly didn't hear what I said. My sister almost / nearly always goes to school at 7 o'clock.

32. D. very, pretty, not + nearly. * 辨析 : nearly 和 almost A. 在表示思想状况和情感时, 同常用 almost 而不用 nearly 。 B. almost + no, nothing, none, never, nobody, nowhere 等表示否定意义的词, 不能用 nearly 。 C. almost + too, more than, 不能用 nearly 。

33. * --- Did you hear his talk? --- Yes, but he said ____ worth hearing. A. almost nothing B. almost everything C. nearly anything D. nearly nothing You can almost imagine you were in Switzerland. The speaker said almost nothing worth listening to. There is almost more than we feared. There is not nearly enough money for a new car. A

34. ‘2001 It was for this reason_____ her uncle moved out of New York and settled down in a small village. A. which B. why C. that D. how C (2003 年上海高考 ) The conference had been held to discuss the effects of tourism_____ the wildlife in the area. A. in B. on C. at D. with B

35. 1. They ____ chickens, cattle and crops as well on the farm. A. raise B. feed C. keep D. bring up 2. My brother stayed at home studying English _____ going to the cinema. A. instead B. instead of C. without D didn't 3. The accident was my fault, so I had to pay for the damage ______ the other car. A. of B. at C. to D. on A B C

36. 4. The old man is still suffering from pain. It seems that the medicine has _____ him. A. no effect to B. little effect on C. some effect in D. a good effect on 5. A hammer _______ driving in nails. A. is used to B. is used for C. Is used as D. is used of B B

37. sentence patterns: 1.How are people’s eating habits changing _______ the years? 2. So, more grass is needed to ______ more sheep and cattle. 3.______ ______ on this arable land _______ the farmers produce food for the whole population of China. It was ______ ______ _______ ________ that scientists started to develop new techniques to increase agricultural production ________ harming the environment. 4.To make _____ _____ use of the land _____ ________, two or more crops are planted each year _________ ________. over raise Itisthat fromtheearly1990s without asmuchas possible where possible

38. 5. Future agriculture should depend on high technology _______ ________ _______ traditional methods. 6. Today, many vegetables are ______ grown in gardens ______ in green-house. 7. _____ ______ is food production important _____ ______ taking care of the environment. 8.______ the latest technologies, Chinese scientists grow vegetables in greenhouses. 9. In 1993, a kind of tomato was developed that was very different _____ any ______ before. 10. In other words, ______ ________ tomatoes grow from a natural seed is changed. aswellas not but the way fromgrown Using Not only but also

39. Homework 完成学案 学英语报 UNIT19 Recite Paragraph 1-3 下周一检查作业，背诵