1、Language points 1.When we use metals,it is important to know how they react with different substances,react with 意为意为“对对起反应起反应”。如：如：Iron reacts with water and air to produce rust.铁与水和空气起化学反应而生锈。铁与水和空气起化学反应而生锈。此外，此外，react还可以同其他介词搭配还可以同其他介词搭配,表示表示不同的意思。如：不同的意思。如：1.When we use metals,it is important to
2、 know how they react with different substances,react with 意为意为“对对起反应起反应”。如：如：Iron reacts with water and air to produce rust.铁与水和空气起化学反应而生锈。铁与水和空气起化学反应而生锈。此外，此外，react还可以同其他介词搭配还可以同其他介词搭配,表示表示不同的意思。如：不同的意思。如：react on sth 对某事物有影响；使某事对某事物有影响；使某事物产生变化。如：物产生变化。如：How do acids react on metals?酸对金属起什么反应？酸对金属
3、起什么反应？react against 反对；反抗反对；反抗 如：如：Will the people ever react against the dictator?有朝一日人民会起来反抗这个独裁者有朝一日人民会起来反抗这个独裁者吗？吗？2.The reaction of metals with these substances can be put in order.in order意为意为“井然有序的；整理好井然有序的；整理好 的的”。如：。如：She keeps the room in order.她把房间整理得很好。她把房间整理得很好。I put my room in order.我把
4、自己的房间整理好。我把自己的房间整理好。此外，此外，in order还有还有“依照次序依照次序;(机器机器等）情况良好等）情况良好”的意思。如：的意思。如：Call the names in order.请依照次序叫名字。请依照次序叫名字。My bicycle is in order.我的自行车情况良好。我的自行车情况良好。含有含有order的其他短语：的其他短语：in order for to do 以便以便能能in short order 很快地很快地on order 已订购已订购on the order of 与与相似的；（数量相似的；（数量等）约等）约的的out of order 不整
5、齐的；杂乱的；出毛不整齐的；杂乱的；出毛病；顺序紊乱病；顺序紊乱to order 定做的定做的 如：如：He spoke slowly in order for everybody to understand him.他讲得很慢以便每个人都能听懂他的话。他讲得很慢以便每个人都能听懂他的话。The book is on order.那本书已订购。那本书已订购。Everything was out of order in the classroom.教室里乱七八糟。教室里乱七八糟。His liver is out of order.他的肝脏出了毛病。他的肝脏出了毛病。3.Add some oil
6、to the water.add sth.to sth.意为意为“加；增加加；增加”。如：如：He added his signature to the petition.他在请愿书上签上了自己的名字。他在请愿书上签上了自己的名字。Many words have been added to this edition of the dictionary.本词典的这一版里新增加了很多词。本词典的这一版里新增加了很多词。有关有关add的其他短语：的其他短语：add to sth 增加某事物增加某事物add(sth)up(两个或两个以上的数或量）两个或两个以上的数或量）加起来加起来add up to
7、sth 总计共达总计共达;相当于某事物，相当于某事物，意为某事物意为某事物俚语：俚语：add fuel to the flames 火上浇油火上浇油add insult to injury(伤害之外又加侮辱伤害之外又加侮辱)使关系更糟使关系更糟 The bad weather only added to our difficulties.这种坏天气更增加了我们的困难。这种坏天气更增加了我们的困难。Add up all the money I owe you.把我应付你的钱都加在一起。把我应付你的钱都加在一起。These number add up to 100.这些数目合计为一百。这些数目合计
8、为一百。These clues dont really add up to very much.give us very little information.这些线索没什么实际意义。这些线索没什么实际意义。4.This will keep air out of the water.keep sb./sth.out of 意为意为“不让某人不让某人/某某物进入某处物进入某处”。如：。如：Keep that dog out of my study.别让那条狗进我的书房。别让那条狗进我的书房。She wore a hat to keep the sun out of her eyes.她戴着帽子摭
9、阳她戴着帽子摭阳,保护眼睛。保护眼睛。类似的：类似的：keep out(of sth.)不进入某处；留在外边不进入某处；留在外边keep up with sb.保持与某人的联系保持与某人的联系keep up with sth.知悉知悉(消息消息);跟上跟上 （形势）（形势）keep up(with sb./sth.)跟上某人跟上某人/某事物某事物keep off 不接近或不接触某人不接近或不接触某人/某事物某事物5.Iron does not rust in air-free water.air-free为形容词，意为为形容词，意为“没有空气的没有空气的”。-free用以构成形容词或副词，意为
10、用以构成形容词或副词，意为“无，无，免除免除”。类似的：。类似的：carefree adj.无忧无虑的无忧无虑的;无牵挂的无牵挂的;轻松轻松愉快的愉快的duty-free adj.&adv.免税的免税的disease-free adj.无病的无病的worry-free adj.无忧无愁的无忧无愁的 6.Half-fill a test tube with water fill with 意为意为“使使满；填满满；填满”。He filled the bottle with water.他把瓶子装满水。他把瓶子装满水。Her eyes were filled with tears.她热泪盈眶。她热
11、泪盈眶。The result filled his heart with despair.这样的结果使他心中充满失望。这样的结果使他心中充满失望。7.Leave the tube for one week.leave意为意为“放置放置,不去动某物不去动某物,使使 处于某种状态处于某种状态”。如：。如：Leave the child as he is.这孩子随他去，别去惹他。这孩子随他去，别去惹他。Who left the lights on?谁没开灯？谁没开灯？Leave a basin of water outside in the freezing weather,and it will
12、soon freeze.在极冷的天把一盆水放在室外在极冷的天把一盆水放在室外,水很水很快会结冰。快会结冰。Exercise 1.在图书馆，图书通常是按作者姓氏的在图书馆，图书通常是按作者姓氏的第一个字母顺序排列的。第一个字母顺序排列的。In the library,books are usually put in the order of the first letter of the writers surname.2.他桌子上的书摆放整齐有序。他桌子上的书摆放整齐有序。The books on his desk are in order(orderly).I.将下列句子翻译成英语。将下列句
13、子翻译成英语。3.请按照正确的顺序将下列单词排列。请按照正确的顺序将下列单词排列。Please put the following words in the correct order.4.我们这次是按照年龄顺序而不是按照我们这次是按照年龄顺序而不是按照身高站队。身高站队。This time we stood in line in the order of age instead of in the order of height.1.Before you go to bed youd better close the doors and windows to _ thieves _.2.Th
14、e fire is dangerous so you should _ the child _ the fire.3.I had to walk faster than before so that I could _ him.4.In winter we usually put on more clothes in order to _ the cold _.keepoutkeepoffkeep up with keepoutIII.请用请用keep短语填空。短语填空。Finish the exercises on grammar on page 43 and page 47.Homework
