1、Unit 7 Protect the Earth语法梳理：不可数名词与情态动词should精讲精练(含答案)v 不可数名词解析：根据表示的事物性质的不同，可将名词分为可数名词和不可数名词。1. 可数名词可以计数，有单复数的区分。而不可数名词是不可以直接计数的名词，没有复数形式。当不可数名词作主语时，谓语动词要用第三人称单数形式。例如：The soup is too hot. 汤太烫了。2. 不可数名词可以分为物质名词和抽象名词。物质名词举例: water, coal, oil, rice 等。抽象名词举例:homework, time, housework,news等。3. *有一些不可数名词
2、表示泛指时是不可数，表示种类时是可数，但含义大多数不发生变化。例如:fruit-fruits, food-foods。一般我们使用它们的不可数形式。4. 有的单词有时可数，有时不可数，例如 chicken 和 fish 作为餐桌上的鸡肉、鱼肉时，是不可数名词； 作为动物鸡、鱼时，是可数名词(同时注意 fish 作为可数名词时，单复数同形，只有在强调不同种类的鱼时,才用 fishes)。5. 不可数名词前面可以用some， any， a lot of等修饰，但不能用many修饰。不可数名词前还可以用“数词+单位词+of”表示数量。例如:a cup of tea 一杯茶。6. 对不可数名词的量提问
3、时用 how much；对不可数名词前的“单位词”提问时，疑问词用how many。例如:How much tea is there on the table? 桌上有多少茶?How many cups of tea are there on the table?桌上有几杯茶?【考题精练】一、用所给单词的适当形式填空。1. Paper (come) from wood.2. There (be) any fish in the fridge. We have to buy more.3. Too (many) smoke (make) the air dirty.4. We can see s
4、ome (milk) in the glass.5. The water in the cup (be) just right, and you can drink (they) now.6. Most of the (energy) (come) from coal and oil.7. Im so thirsty. I want two (bottle) of (orange) (juice).8. Im hungry. I want some (rice) and (chicken).9. There (be) much rubbish in the water, and the fis
5、h (be) dead.10. The rain (keep) the trees and flowers wet.11. There are many (woman) (teacher) in our school.12. We shouldnt use too (many) plastic bags, because too (many) plastic is bad for the Earth.二、单项选择。( )1. Coal is useful energy.A. an B. a C./( )2. We shouldnt drive or use plastic bags.A. to
6、o much; too many B. too many; too much C. too much;too much( )3. There coal or oil on Earth.A. isnt many B. isnt much C. is much( )4. Dont drive too . We dont have energy now.A. near; much B. far; many C. far;much( )5. We should reuse water because theres not water in places.A. many; much B. much; m
7、any C. much; muchv 情态动词should的用法All students should know this. 所有的学生都应该知道这点。1. 用法情态动词should表示命令、建议、义务、责任，意为“应当，应该”。 情态动词should与动词原形搭配使用，其否定形式是should not，should not可缩写为shouldnt。 易错点提醒：should为情态动词，没有人称和数的变化。2. 情态动词should引导的几种常见句式：(1) 肯定句结构：主语 + should + 动词原形(+其他). 例如： You should save water. 你(们)应该节约用水
8、。(2) 否定句结构: 主语 + shouldnt+ 动词原形(+其他). 例如： You shouldnt waste water. 你(们)不应该浪费水。(3) 一般疑问句结构：Should + 主语 + 动词原形(+其他)? 例如： Should we go there tonight? 我们今晚应该去那里吗?(4) 特殊疑问句结构：特殊疑问词 + should + 主语 + 动词原形(+其他)? 例如： What should we do to protect the Earth? 我们应该做什么来保护地球?【考题精练】一、用should或shouldnt填空。1. You _ kee
9、p your room clean and tidy.2. We _ use too many plastic bottles.3. Its late. I _ go home now.二、单项选择。( )1. What does it mean? It means you _ walk on the grass.A. shouldnt B.should C. could( )2. We should _ trees.A. to plant B.plant C. planting三、按要求完成句子。1. We should not waste water. (改为同义句)We should _
10、 water.2. We should save energy because there is not much energy. (对画线部分提问)_ _ we save energy?3. You should litter the rubbish and cut down trees. (改为否定句)You _ litter the rubbish _ cut down trees.四、阅读理解。Nowadays many people live a low-carbon(低碳的) life. My aunt Alice is one of them. She is a lawyer(律
11、师). She has a nice car. But she often goes to work by subway. When she is at work, she always prints(打印) on both sides of the paper. Its a good way to save paper, and to save trees. Her home is not far from her office. She often goes home on foot after work. She always remembers to turn off the TV w
12、hen she isnt watching it. When she is brushing her teeth, she never wastes water. I should learn from my aunt to live a low-carbon life.阅读短文，选择正确的答案。( )1. Alice is a .A. lawyer B. worker C. driver( )2. Alice often goes home .A. by subway B. by car C. on foot( )3. To save trees, we should .A. save pa
13、per B. cut down too many treesC. go to work by taxi( )4. When Alice is brushing her teeth, she .A. turns off the TV B. turns off the tap C. wastes water( )5. According to the passage, we should live a life.A. healthy B. low-carbon C. happy参考答案不可数名词答案：一、1. comes 2. isnt 3. much; makes 4. milk 5. is;
14、it 6. energy comes 7. bottles; orange juice 8. rice; chicken 9. is; are 10. keeps11. women teachers 解析:当一个名词用来修饰另一个名词时，前面那个名词一般用原形，如：toy animals。而 woman 或man为特例,当这两个名词修饰名词复数时， woman 和 man同样也用其复数形式，故第一空填 women。12. many;much二、CABCB情态动词should答案一、 1.should 2.shouldnt 3.should二、 1.A 2.B三、 1.save 2.Why should 3.shouldnt; or四、 ACABB
