广州七年级下册Unit 5 Water同步讲解Unit 5 Reading重点单词短语：1.drop n. 滴 v. 落下过去式：droppeda drop of water一滴水several drops of water 几滴水drop into the river滴进河里2.journey n. 旅行，旅程have a good journey有个愉快的旅程3.The tap was on.On 在此处表示开着的。save water/ waste water节约/浪费水Water runs into riversrun into 流入Water rises from the sea to the sky.水从海里上升到天空中。 rise v. 上升Water falls from the clouds as rain.水随着雨水从云中掉下来。Water covers about two thirds of the earth.cover v.覆盖通常用在被动语态be covered by...中，表示被....覆盖。如：The floor is covered by snow in the cold winter.英语分数的表示法：用“基数词＋序数词”表示其中基数词表示分子,序数词表示分母.若分子大于一，分母用复数形式。三分之一：one third三分之二：two thirds二分之一：a（one）half四分之一：a（one）fourth常用a quarter四分之三：three fourths常用three quartersOnly one-fifth of air consists of oxygen．氧气只占空气的1／5.About two thirds of the students attend the meeting．大约2／3的学生都参加了会议.About 3% of the water on Earth is fresh or without salt.用percent等表示百分比%表示百分之一常用one percent或per cent,即用百分数表示法来表达.例如：Our bodies are 65 percent water．我们人体含65％水分.Seventy-five percent of the Earth is covered by water．地球表面的75％被水覆盖着.常考词组：Water falls from the clouds as rain.词组解析： fall from 从… 掉落加强练习：翻译-------秋天一到，叶子就开始从树上飘落。 “Turn that tap off,” said an angry voice.词组解析： turn … off 关掉 turn ....on开加强练习：翻译-------水龙头的水一直在流，你能把它关掉吗？ They cleaned me and added some chemicals to me.词组解析： add … to… 在… 中加入…加强练习：翻译-------在面粉中加入一些糖。 So is this the end of your journey 词组解析： the end of 在… 结尾；终点Remember not to waste or pollute me.词组解析： remember not to do … 记得不要做加强练习：翻译-------你必须记住不要污染环境。 The man gave the coin to her as part of her change.词组解析： part of … “… 的一部分”加强练习：翻译-------你来自西班牙的那个地区？ She gave it to me as pocket money.词组解析： pocket money 零花钱加强练习：翻译-------Jack从来都不浪费他的零花钱。 Our class is made up of twenty girls and sixteen boys.词组解析： is made up of 由… 组成加强练习：翻译-------我们队由三十个男生和二十个女生组成。 If there is no rain, rivers dry up and fish die.词组解析： dry up 干，枯竭加强练习：翻译-------如果河流干啦，人类就难以生存。 重点句型：Then it was time for people to clean me.句型分析：it is time (for sb.)to do sth. 意为“是该某人做…. 的时候”句型模拟： If water drips from your tap every 10 seconds, you will waste about 315 liters of water a year--- enough to fill two baths!句型分析：adj./ adv. enough (for sb.) to do sth. 意为“足够做…..”句型模拟： Having a bath uses about twice as much water as taking a shower.句型分析：twice as… as… 意为“… 是…. 的两倍..”句型模拟： Having a shower instead of a bath can save up to 400 liters a week.句型分析：having a shower… 在句中做主语句型模拟： Unit5基础练习：找出与其它三项读音不同的一项。( )1. A.drop B.journey C.possible D.oxygen( )2. A.experiment B.expensive C.exercise D.excuse( )3. A.add B.valuable C.change D.bank( )4. A.chemical B.fresh C.return D.pet( )5. A.continue B.form C.produce D.apologize单词拼写。1. The soup is very salty, because my mother put too much s in it.2. If you work hard and never give up, everything is p .3. The water here is clean. It is (drink).4. Gold is (value).5. O cover 2/3 of the Earth.6. Be careful. The (化学品) can be dangerous.7. The old man likes taking a s more than once every day in summer.8. Tom has to buy 5 liters of o to fill up his car on his way home.9. This is not the end of my j , for I will go traveling to Beijing tomorrow.10. She d her watch and it broke.三、完成句子。1、当离开教室时，你应该把灯关掉。You should lights when you leave the classroom.在牛奶中加入化学品是不好的。It is not good to some chemical the milk.这条裙子是丝绸做的。The dress silk.把盐加入水中它会溶解成水的一部分。Add the salt into water and it becomes the water.记得不要去污染或浪费水。 Waste or pollute water.孩子不应该有太多的零花钱。Children should not have .四、单项选择。The popular singer, Rene Liu, Taiwan.come from B.is come from C.be from D.is fromI feel very tired and need sleep.a few B.few C.a little D.littleWater is very important to us, so we should make water .to clean B.clean C.cleaning D.cleanedThey are having a meeting. Please the radio.turn off B.turn down C.turn on D.turn upRemember water, because water is less and less.to waste B.not to waste C.wasting D.wastedQuite students here learn cooking after school.many B.a lot C.few D.a fewThere an exciting football match this \Saturday.will have B.will has C.will be going to D.will be uses about as taking a shower.Have a bath, two times as many water B. Having a bath, twice as many waterC. Having a bath, twice as much water D. Have a bath, twice as much water—There is food in the fridge. —OK, I will buy something to eat and .a little, two glasses of milk B.little, two glasses of milkC.few, two glasses of milks D.a few, two glasses of milk—I’ll meet you outside the school in half an hour, OK — .A. No, one hour later B. Yes, that’s fine C. OK, but I can manage D. No, I don’t think so11.Will you go for a walk after________ dinner A. a B. an C. the D. /12. Kitty: Carl, why not go and help your sister water the flower there Carl: Why_______ I’m busy myself. Jack is lying on the grass doing nothing. A. me B. I C. him D. he13. My cousin is always busy with his work, He has ________ time to read newspaper. A. little B. few C. a little C. a few 14. When I was in Italy last year, I ________ a lot of famous cities . A. visit B. visited C. visits D. am visiting15. Many people have tried ,but ________ have succeeded in completing the task. A. the few B. a few C .few D. some16. Don’t forget _________ take the medicine every day. A. to take B. taking C. to eat D. eating17. It‘s time ________ all of us to get ready for the quiz. A. to B. of C for D. at 18.He __________, but here was no one there. A. looked at B. looked around C. looked for D. looked after19.People will make me __________ again. A. clean B. cleanly C. cleaner D. cleanest20.Remember __________ or pollute water.to waste B. not to waste C. wasting D. no wasting.Unit 5 more practice 重点词汇回顾1.therefore adv/conj 因此，所以 【用法】therefore 相当于so 【例句】He was ill, and therefore could not come. 他病了, 所以未能来。So +完整句子2.drinkable【扩展】drink v. 喝 n.饮料 drinkable adj. 可饮用的 undrinkable adj 不可饮用的【例句】This wine is quite undrinkable. 这种酒根本不能喝. 这水可以喝吗 _____________________________________________3. change n.零钱【用法】1. 用作名词，表示“变化”、“改变”，多用作可数名词，有时也可用作不可数名词 ( http: / / www. / Article / grammar / Index.html )： 比较以下用介词 ( http: / / www. / Article / 200810 / 542.html ) of 的情形：a change of meaning 词义的变化 2. 表示“零钱”、“找头”，是不可数名词 ( http: / / www. / Article / grammar / Index.html )。如： Don’t forget your change. 不要忘记找给你的钱。【扩展】(1) change……for……意为“用……换来……”。如： I’m thinking of changing my car for a new one. 我正考虑换辆新车。 (2) change……into……意为“把……变成(换成)……”。如： He changed his dollars into francs. 他把美元换成了法朗。 We can change ice into water by heating it. 通过加热我们可以把冰变成水。4. return v.归还 【用法】return sth to=give back to (归还） return to+地点=go back to 【例句】You should return the piano to Dick on time. Ann will visit you when he returns to London. 5. continue v.继续 【用法】continue to do 指继续做另一件事
continue doing 指继续做刚刚做过的那件事。
【例句】After drinking a cup of coffee, I continued to do my homework.(喝咖啡之前我是在做别的事而不是做作业)
After drinking a cup of coffee, I continued doing my homework. (喝咖啡之前我在做作业但没做完，喝完以后继续做){就是做作业做累了就休息一下，休息完了继续做)6.be made up of...有...组成的 【例句】 Our country is made up of thirty=one provinces. 【拓展】 be made of 由...制成的（看得见材料） be made from 由...制成的（看不见材料）7.. If water drips from your tap every 10 seconds, you will waste about 315 litres of water a year- enough to fill two baths! 【用法】enough to 后接动词原形，“足以…”【例句】I think you are tall enough to reach the top of the shelf.【拓展】enough 名词 形容词/副词+ enough（名前形副后）8. Having a bath uses about twice as much water as taking a shower. 【用法】have a bath 洗盆浴 take a shower 洗淋浴【拓展】twice as(many /much) +n.+ as 两倍多的.... three times four times 【例句】She is twice as old as me. Mary has three times as many books as me.9. Having a shower instead of a bath can save up to 400 litres a week.【用法】1）Instead of +doing 对比：instead 2）having a shower instead of a bath 是一个主语。【例句】His success came from his skill instead of his luck. Why don’t you play football instead of just looking on 课堂达标检测一、重点词汇、短语单词考察 银行找给的零钱有点归还蒸汽形成继续结晶搅拌海洋短语考察洗盆浴洗淋浴代替有点，一点儿零花钱由...组成的干涸 二．首字母填空You must r________the books to the library in a month.The ocean water is salty, t__________ most of the water in the world is not drinkable.3. The manager went to the b_________to get some money.4. Have a break now, and we’ll c_______discussing the question in half an hour. The water here is clean. It is d . The old man likes taking a s more than once every day in summer. O cover 2/3 of the Earth. Don’t s________the water in the cup.三、完成句子1. 这条裙子是丝绸做的。 The dress silk.把盐加入水中它会溶解成水的一部分。 Add the salt into water and it becomes the water.记得不要去污染或浪费水。 Waste or pollute water.孩子不应该有太多的零花钱。Children should not have .5.他走向浴室淋浴。 He went up to the bathroom and _______ ________ ________.6.用淋浴代替盆浴能够一周节约400升水。 Having a shower ________ __________ a bath can save up to 400 litres a week.他足够聪明，能够自己解决这道问题。 He is _________ ________ ________work out the problem by himself.四．单项选择( )1 There is _______sugar in my coffee. It’s too sweet.A. too much B. too many C. too few D. too little( )2. Alice looked _______the room, but saw no one.A. around B. for C. at D. up( )3.-- Alice: What did Peter drop ________the river ----Ben: Maybe a stone.A. in B. into C. on D. onto( )4. It is time _______all of us to get ready for the quiz.A. to B. of C. for D. at( )5.There _______twenty attendants at the contest tomorrow.A. are B. have C. will have D. will be( )6. We should ______the used water clean before it goes back into the sea.A. keep B. make C. become D. turn( )7. After I had a bath in the bathroom this morning, I ________the tap on. This makes the bathroom full of water.A. left B. forgot C. turned D. switched( )8. We all should remember _______water .A. not waste B. wasting C. not wasting D. not to waste( )9. If you _____some salt to a glass of water, it _____and become part of the water.A. add…disappear B. add… will disappear C. will add…disappear D. will add…will disappear( )10.When I was in Italy last year, I _______a lot of famous cities.A. visit B. visited C. visits D. am visiting 七年级下册Unit 5语法--量词 一、重 难 点1）理解什么是量词2）掌握修饰可数名词与不可数名词的量词二、精讲点拨＊many，much1. much/many 意为“很多”，既可起代词作用，也可起形容词作用，比较级和最高级为more，most. 在句中，可作主语，宾语和定语等. much与不可数名词连用，作主语时谓语动词用单数，many与可数名词复数连用，作主语时谓语动词用复数。eg：Much bread goes bad.We can learn much with the help of him.There is much water in the pool.There are many people over there.2. much/many前面可加上how，as，too， so等修饰.eg：How much have you paid for the bill How many people want to learn French You eat too much.＊lot1. lot不能单独使用，常与of连用，lots of/ a lot of意为“许多”，后面接可数名词复数和不可数名词均可，接可数名词时谓语用复数，接不可数名词时谓语用单数. a lot是副词性短语，可以修饰动词.eg：There are a lot of animals in the zoo.Thanks a lot. = Thank you very much.2. 表示“大量，许多”的短语，a lot of, lots of, a number of, a great deal of,a large amount of, plenty of等. (1) a lot of既可以修饰不可数名词也可以修饰可数名词的复数形式，可以相应的换成much和many. (2) plenty of既可以修饰不可数名词也可以修饰可数名词复数。 (3) a number of 只修饰可数名词复数，作主语时谓语动词用复数形式。 (4) a great deal of 和a large amount of只修饰不可数名词，作主语时谓语动词用单数形式。 eg: A lot of people think that time is money. I don’t have to do it in a hurry because I have plenty of time. I have a number of letters to write today. I spend a great deal of time on shopping.＊little/a littlelittle意为“很少”，“几乎没有”，含否定含义，其比较级和最高级为less和least，a little意为“有些”，含肯定之意。little, a little 既可起代词作用，也可起形容词作用与不可数名词连用。在句中都可作主语，宾语和定语。Eg: He is a very poor man and he has little money. Don’t worry. There is still a little time left.＊few/a fewfew意为“很少”，“几乎没有”，含否定之意，其比较级和最高级为fewer和fewest; a few意为“有几个”，“有些”，含肯定之意。few，a few既可起代词作用，也可起形容词作用与可数名次复数连用，它们在句中可作主语，宾语和定语。Eg：In that polar region there live few people.You can get a few sweets from him.＊enoughenough意为“足够”，可作形容词，副词，名词。基本用法如下：作形容词，可放在所修饰的名词前或后。既可修饰可数名词，也可修饰不可数名词，还可以单独作表语。1) 作名词Eg：---Do you want any more rice ---No, thanks. I have had enough.2) 作表语Eg：Ten dollars is enough.There is enough food for everybody.3) 作副词Eg：The coat is good enough.He plays well enough for a beginner.注意：形容词的比较级前还可以用much, a lot, far, even, still, a little, no, any等表示程度的词来修饰。即：very + 原級 ; much /a little / a lot / even / far + 比较級 如： Tom is much taller than Jack. (Tom比Jack高多了。)I feel a little better than yesterday.?我感觉比昨天好一点儿了。? The job is far more difficult than before.?这工作比以前要难得多。▲不可数名词的计量方法(1) 一般用“数字 + 计量单位+名词+ of”表示。（注意：当数字大于一时，表示计量单位的名词可以有复数形式）。如：a piece of news 一则新闻 a piece of meat 一块肉a glass of wine 一杯酒 two bowls of rice 两碗米a sum of money 一笔钱 five bags of flour 五袋面粉a drop of water 一滴水 three bottles of milk三瓶牛奶 two pieces of advice 两条建议(2) 当我们询问量的多少时，常用how many , how much 。 How many 用于询问可数名词；而how much 用于不可数名词。同时，how much 还可用于询问价格。How many bags of rice do you need 你需要多少袋大米？How much paper does your office need 你们办公室需要多少张纸 ？How much does the notebook cost 这电脑笔记本要多少钱？(3) too 与 enough 也可用于量的表达。too 表示过量，enough表示足量。This family doesn’t have enough money to buy a house.这家人没有足够的钱买一套房子。I ate too much. I don’t feel well. 我吃太多了，我感到不舒服。巩固提升1. There are reservoirs in Guangdong.A. much B. too much C. many D. much too2. Taking a bath takes much more water than showers----about twice as .A. much B. too much C. many D.too many3. We must hurry. There is time left.A. a little B. little C. a few D. few4. He did well in the exam and made mistakes.A. few B. little C. a little D. a few5. Twenty liters of water is to fill 65 cans of soft drinks.A. much B. many C. enough D. no6. She ran out of all the cooking oil at home. She used cooking oil.A. too many B. too much C. too few D. too little7. In hot days, there are usually swimmers in the pool.A. a lot of B. a lot C. few D. much8. My cousin is always busy with his work. He has time to read newspaper.A. little B. few C. a little D. a few9. There is sugar in my coffee. It’s too sweet.A. too many B. too much C. too few D. too little10. Please come here earlier. We have no time. A. a little B. little C. few D. many 11. The boy is old to go to school. A. enough B. much C. a little D. many 12.His room is big to hold 10 people.too B. enough C. much D. few
