13. It flows over boards thickly coated with grease¹.

　　在本句中的定语从句thickly coated with greases前面省略了which/that are.coat一般做名词用，意思是“外套”或“（动物的）皮毛”。在本句中coat作动词用，意思是“在…上涂（包）着”，如：

　　1） These pills are coated with sugar. （这些药丸外面包着糖衣。）

　　2） Don't jump on the bush piles， they are ice-coated and slippery². （不要在灌木堆上跳，上面盖着冰，很滑。）

　　14. Since diamonds stick to grease， they are left behind by the rocks and mud which flow down the tables.

　　Stick在本句中的意思是“粘住”。Stick to也可以表示“坚持，遵守”的意思。请看下面的句子：

　　1） I'm sure father hasn’t read the book because several pages are stuck together. （我敢肯定父亲没有看过那本书，因为有几页还粘在一起。）

　　2） It's important for nurses to stick to the rules. （对护士来说，遵守规定是很重要的。）

　　3） Stick to your post and make sure everything is ok. （坚守你的岗位，确保一切正常。）

　　leave behind在本句中的意思是“留下”，这个词组还可以表示“忘带；把…丢在后面”。例如：

　　1） Take care not to leave anything behind. （小心别丢下任何东西。）

　　2） Look forward to the bright future and leave all your worries and fears behind. （期盼光明的未来，把所有的担心和恐惧抛在身后。）

　　15. Experienced³ diamond miners⁴ can tell a diamond immediately.

　　句子中的tell意思为“判断；分辨；看出”。如：

　　1） I cannot tell her from her twin sister. （我无法分辨出她和她的孪生妹妹。）

　　2） Can you tell which is my school-bag？ （你能分辨出哪一个是我的书包吗？）

　　3） It is important for you to tell right from wrong. （分辨出正误很重要。）

　　本课主要词组及语法要点

　　A. 词组

　　1. make a cut in sth.　　　　2. change…into

　　3. be made from　　　　 　4. become popular with

　　5. run out　　　　　　  　 6. pick up

　　7. handfuls⁵ of　　　　　 　8. sort out

　　9. carry from　　　　　 　10. be coated with

　　11. stick to　　　　　  　 12. leave behind

　　13. tell…（from）　　　 　　14. find out

　　B. 语法要点

　　1. 被动语态

　　2. 定语从句

　　3. 状语从句

　　4. 主语从句

　　Text B  The Difference between Plants and Animals

　　短语表达

　　1. difference between…and

　　Will you please tell me the difference between a horse and a seahorse？

　　I cannot hear any difference between the American pronunciation and the British pronunciation for this word.

　　2.neither …nor

　　He is not a person to rely on as he is neither honest nor sincere⁶.

　　I have neither seen him nor heard from him since we last met.

　　3. look up

　　Father didn't look up from his book when I entered the sitting room.

　　The little boy didn't dare to look up at his teacher.

　　4. a matter of

　　Everybody would pay some attention to the contest as it is a matter of honor⁷.

　　Don't panic. This is a matter of record and there is nothing to worry about.

　　5. throughout

　　The products of this factory will be supplied to people throughout the country.

　　He said that a person should be honest and upright⁸ throughout his life.

　　6. be satisfied with

　　Tom was fully⁹ aware of the consequence when his father saw his test paper.

　　The teacher was satisfied with the students' performance.

　　7. take place

　　Great changes have taken place in China in the past 20 years.

　　The accident took place when people were all fast asleep.

　　8. lie in

　　The importance of this book lies in its later influence.

　　The root of all these events lay in history.

　　9. be classed as

　　He was classed as a genius.

　　Some kinds of seaweed are animals but they used to be classed as plants.

　　10. hold good

　　This rule may hold good for you but not for me.

　　His answer doesn't hold good for this specific question.

　　11. live on

　　Cows live on grass.

　　The old man lives on the government pension¹⁰.

　　12. work wonders

　　I don't think this medicine will work wonders.

　　We didn't think he could pull through this time but he worked wonders again.

　　13. take in

　　Their club took in some new members last week.

　　He took in his guest and offered him a cup of coffee.

　　14. suck up

　　The plants suck up a lot of water.

　　He sucks all the information you gave him.

　　15. take up

　　He took up the newspaper and began to read.

　　She took up English when she was only five.

　　All the window seats had been taken up when I got on the bus.

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