Unit 8 课时5 Grammar in Use（分层作业）英语新教材仁爱科普版七年级下册

Unit 8 Our Blue Planet 课时5 Grammar in Use 分层作业 核心知识速记 01基础达标 02能力提升 03拓展培优 04思维进阶 词汇 number n. 数字；数量 hundred num. 一百 thousand num. 一千 million num. 一百万 billion num. 十亿 percent n. 百分之…… square adj. 平方的 n. 正方形 kilometre n. 千米；公里 metre n. 米 coastline n. 海岸线 短语 hundreds of 成百上千的 thousands of 成千上万的 millions of 数百万的 billions of 数十亿的 square kilometres 平方公里 percent of ……的百分比 句型 1.数词表达：具体数字+hundred/thousand/million/billion + 可数名词复数（不加s） 例：two hundred students 两百名学生 hundreds/thousands/millions/billions of + 可数名词复数（加s，后接of） 例：thousands of trees 成千上万棵树 2.百分比表达：数字+percent of + 名词（谓语动词单复数由of后的名词决定） 例：70 percent of the water is fresh. 70%的水是淡水。 3.度量单位表达：数字+单位（metre/kilometre）+ 形容词（long/wide/deep/high） 例：The river is 500 kilometres long. 这条河500千米长。 4.祈使句： 肯定式：动词原形开头（+宾语+其他） 例：Save every drop of water. 节约每一滴水。 否定式：Don’t + 动词原形（+宾语+其他） 例：Don’t waste water. 不要浪费水。 一、单项选择题。 （ ）1. About 71 ________ of the earth’s surface is covered with water. A. percent B. percents C. percentage D. percentages （ ）2. The Changjiang River is about 6,300 ________ long. A. metre B. metres C. kilometre D. kilometres （ ）3. ________ trees are cut down every year. We should protect forests. A. Thousand B. Thousands C. Thousand of D. Thousands of （ ）4. 70 percent of the land ________ covered with grass. A. is B. are C. was D. were （ ）5. ________ waste water! Every drop is precious. A. Not B. Don’t C. Doesn’t D. No 二、用括号内所给词的适当形式填空。 1.About 30 percent of the students ________（like）swimming in summer. 2.________（thousand）of birds come to this lake every winter. 3.The lake is about 20 ________（metre）wide. 4.There are two ________（hundred）students in our school. 5.Don’t ________（waste）water. Let’s save every drop. 三、句型转换。 1.The Arctic Ocean is about 14 million square kilometres.（对划线部分提问） ________________________________________________________________________________________ 2.We should save water in daily life.（改为祈使句） ________________________________________________________________________________________ 3.70 percent of the earth’s water is sea water.（对划线部分提问） ________________________________________________________________________________________ 4.There are two thousand students in our school.（对划线部分提问） ________________________________________________________________________________________ 5.Throw rubbish into the river.（改为否定祈使句） ________________________________________________________________________________________ 四、语法填空。 The earth is our home. Let’s learn some important grammar about its data. First, about 71 percent of the earth’s surface 1. ________（be）covered with water. But only 3 percent of it 2. ________（be）fresh water. Second, there are 3. ________（thousand）of living things on the earth. Many of them need fresh water to live. Third, the Pacific Ocean is about 166 million square 4. ________（kilometre）. It’s the largest ocean. Finally, 5. ________（not waste）water! We should save every drop. 五、选词填空。 hundred thousands percent don’t save is are kilometres metres plant 1.About 71 ________ of the earth’s surface is covered with water. 2.There are ________ of fish in the sea. 3.The river near our city is about 50 ________ wide. 4.Two ________ students in our school joined the water-saving activity. 5.60 percent of the flowers ________ red. 6.The Great Wall is more than 20,000 ________ long. 7.________ waste fresh water. It’s precious. 8.We should ________ more trees to protect water sources. 9.Only 3 ________ of the earth’s water is fresh. 10.The lake ________ about 200 square kilometres. 六、完形填空。 The earth is a blue planet with many amazing data. Let’s learn grammar through these data. First, about 71 1. ________ of the earth’s surface is covered with water. But only 3 percent of it is fresh water. So we need to 2. ________ every drop. Second, there are 3. ________ of living things on the earth. But many are in danger. We should 4. ________ more trees and 5. ________ waste water. Third, the Nile River is about 6,671 6. ________ long. It’s the longest river in the world. Fourth, the Pacific Ocean covers about 166 million square 7. ________. It’s the largest ocean. Fifth, 8. ________ of people don’t have enough clean water. We should do our best to help them. Finally, 9. ________ forget the grammar rules: “数字+percent of+名词”“hundreds/thousands of+复数” and imperative sentences. 10. ________ protect our earth with correct grammar and practical actions! （ ）1. A. percent B. percents C. percentage D. percentages （ ）2. A. waste B. save C. use D. drop （ ）3. A. thousand B. thousands C. thousand of D. thousands of （ ）4. A. plant B. plants C. planting D. planted （ ）5. A. waste B. not waste C. to waste D. wasting （ ）6. A. metre B. metres C. kilometre D. kilometres （ ）7. A. kilometre B. kilometres C. metre D. metres （ ）8. A. Million B. Millions C. Million of D. Millions of （ ）9. A. Doesn’t B. Don’t C. Not D. No （ ）10. A. Let’s B. Let C. Lets D. To let 七、阅读表格，完成下列题目。 Earth’s Data Details Percentage of water on surface 71% Percentage of fresh water 3% Total area About 510 million square kilometres Length of Changjiang River About 6,300 kilometres Length of Nile River About 6,671 kilometres Number of living things Billions （ ）1. How much of the earth’s surface is covered with water? A. 3%. B. 71%. C. 510 million. D. 6,300 kilometres. （ ）2. Which is longer, the Changjiang River or the Nile River? A.The Changjiang River. B. The Nile River. C. They are the same. D. We don’t know. （ ）3. What’s the total area of the earth? A.About 510 million square kilometres. B. 71% of the surface. C.About 6,671 kilometres. D. 3% of fresh water. （ ）4. 71% of the earth’s surface is covered with water. The underlined part means ________. A.in 100 B. 71 times C. 71 kinds D. 71 years （ ）5. Which sentence is grammatically correct according to the table? A.percents of the surface is water. B.The Nile River is 6,671 kilometre long. C.3 percent of the water is fresh D.Thousands of square kilometres is the earth’s area. 多任务混合阅读。 Part 1: 阅读短文，完成语法相关任务 There are many important data about our earth. Let’s learn grammar from them. First, the earth’s circumference is about 40,000 kilometres. Second, 71 percent of its surface is covered with water, but only 3 percent is fresh water. Third, there are billions of living things on the earth. Fourth, the Pacific Ocean covers about 166 million square kilometres. We should save water and protect the earth. Remember: “数字+hundred/thousand”“hundreds/thousands of” and imperative sentences. Task 1: 回答语法相关问题 1.How is “成千上万的生物” expressed in English? ________________________________________________________________________________________ 2.What’s the correct negative form of “Waste water”? ________________________________________________________________________________________ Task 2: 用语法结构改写句子 1.30 percent of the water is fresh.（对划线部分提问） ________________________________________________________________________________________ 2.We should plant more trees.（改为祈使句） ________________________________________________________________________________________ Part 2: 语法拓展与应用 核心语法拓展： 复合数词：two hundred and fifty（250）（具体数词中间加and） 祈使句委婉式：Please save water.（加Please使语气委婉） 语法句型积累： 数字+单位+形容词：The lake is 50 metres deep.（这个湖50米深） 百分数+of+名词+谓语动词：60 percent of the books are new.（60%的书是新的） Part 3: 写作训练（语法综合运用） 根据短文及语法知识，写一段关于“地球数据与节水”，要求： 1.不少于6句话； 2.至少使用3种本课时核心语法（具体数词、模糊数词、百分比、祈使句）； 3.语法正确，逻辑清晰。 ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ 1 / 6 学科网（北京）股份有限公司 $ Unit 8 Our Blue Planet 课时5 Grammar in Use 分层作业 参考答案 一、单项选择题： 1.A 2.D 3.D 4.A 5.B 二、用括号内所给词的适当形式填空： 1.like 2.Thousands 3.metres 4.hundred 5.waste 三、句型转换： 1.How large is the Arctic Ocean? 2.Save water in daily life! 3.What percent of the earth’s water is sea water? 4.How many students are there in your school? 5.Don’t throw rubbish into the river. 四、语法填空： 1.is 2.is 3.thousands 4.kilometres 5.Don’t waste 五、选词填空： 1.percent 2.thousands 3.metres 4.hundred 5.are 6.kilometres 7.Don’t 8.plant 9.percent 10.is 六、完形填空： 1.A 2.B 3.D 4.A 5.B 6.D 7.B 8.B 9.B 10.A 七、阅读理解： 1.B 2.B 3.A 4.A 5.C 多任务混合阅读 Part 1: 阅读短文，完成语法相关任务 Task 1: 回答语法相关问题 1.Billions of living things. 2.Don’t waste water. Task 2: 用语法结构改写句子 1.What percent of the water is fresh? 2.Plant more trees! Part 3: 写作训练（示例） Our earth is a precious blue planet. About 71 percent of its surface is covered with water, but only 3 percent is fresh water. There are billions of living things that need fresh water to live. Thousands of people don’t have enough clean water. So we must save water. Don’t waste water when brushing teeth. Turn off the tap in time. Plant more trees to protect water sources. Let’s use grammar correctly and protect our earth together. 1 / 6 学科网（北京）股份有限公司 $ Unit 8 Our Blue Planet 课时5 Grammar in Use 分层作业 核心知识速记 01基础达标 02能力提升 03拓展培优 04思维进阶 词汇 number n. 数字；数量 hundred num. 一百 thousand num. 一千 million num. 一百万 billion num. 十亿 percent n. 百分之…… square adj. 平方的 n. 正方形 kilometre n. 千米；公里 metre n. 米 coastline n. 海岸线 短语 hundreds of 成百上千的 thousands of 成千上万的 millions of 数百万的 billions of 数十亿的 square kilometres 平方公里 percent of ……的百分比 句型 1.数词表达：具体数字+hundred/thousand/million/billion + 可数名词复数（不加s） 例：two hundred students 两百名学生 hundreds/thousands/millions/billions of + 可数名词复数（加s，后接of） 例：thousands of trees 成千上万棵树 2.百分比表达：数字+percent of + 名词（谓语动词单复数由of后的名词决定） 例：70 percent of the water is fresh. 70%的水是淡水。 3.度量单位表达：数字+单位（metre/kilometre）+ 形容词（long/wide/deep/high） 例：The river is 500 kilometres long. 这条河500千米长。 4.祈使句： 肯定式：动词原形开头（+宾语+其他） 例：Save every drop of water. 节约每一滴水。 否定式：Don’t + 动词原形（+宾语+其他） 例：Don’t waste water. 不要浪费水。 一、单项选择题。 （ ）1. About 71 ________ of the earth’s surface is covered with water. A. percent B. percents C. percentage D. percentages 【答案】A 【解析】本题考查percent的语法用法。percent（百分之……）为不可数名词，无复数形式，后接of短语，符合“数字+percent of+名词”的固定结构，故选A。 （ ）2. The Changjiang River is about 6,300 ________ long. A. metre B. metres C. kilometre D. kilometres 【答案】D 【解析】本题考查度量单位的数词搭配。6,300为大于1的数字，后接可数名词复数，结合实际常识，长江长度用“千米（kilometres）”计量，故选D。 （ ）3. ________ trees are cut down every year. We should protect forests. A. Thousand B. Thousands C. Thousand of D. Thousands of 【答案】D 【解析】本题考查模糊数词的语法规则。thousand前无具体数字时，需加s并接of，构成“thousands of+可数名词复数”的固定结构，意为“成千上万的”，故选D。 （ ）4. 70 percent of the land ________ covered with grass. A. is B. are C. was D. were 【答案】A 【解析】本题考查百分比作主语的主谓一致。“percent of + 名词作主语时，谓语动词的单复数由of后的名词决定，land为不可数名词，用is。” 故选A。 （ ）5. ________ waste water! Every drop is precious. A. Not B. Don’t C. Doesn’t D. No 【答案】B 【解析】本题考查祈使句的否定式语法。祈使句否定式需用“Don’t+动词原形”开头，故选B。 二、用括号内所给词的适当形式填空。 1.About 30 percent of the students ________（like）swimming in summer. 【答案】like 【解析】“百分数+of+名词”作主语，students为可数名词复数，谓语动词用原形like，符合主谓一致语法规则。 2.________（thousand）of birds come to this lake every winter. 【答案】Thousands 【解析】模糊数词用法：thousand前无具体数字时，需加s并接of，构成“thousands of”短语，句首首字母大写。 3.The lake is about 20 ________（metre）wide. 【答案】metres 【解析】度量单位语法：数字20后接可数名词复数，metre的复数为metres，符合“数字+单位复数+形容词”的结构。 4.There are two ________（hundred）students in our school. 【答案】hundred 【解析】具体数词用法：hundred前有具体数字2时，用原形，构成“具体数字+hundred+可数名词复数”的语法结构。 5.Don’t ________（waste）water. Let’s save every drop. 【答案】waste 【解析】祈使句否定式语法：Don’t后接动词原形，符合“Don’t+动词原形”的固定结构。 三、句型转换。 1.The Arctic Ocean is about 14 million square kilometres.（对划线部分提问） ________________________________________________________________________________________ 【答案】How large is the Arctic Ocean? 【解析】本题考查度量单位相关的特殊疑问句语法。划线部分为面积（14 million square kilometres），用How large提问，符合“询问物体面积”的语法表达。 2.We should save water in daily life.（改为祈使句） ________________________________________________________________________________________ 【答案】Save water in daily life! 【解析】本题考查陈述句变祈使句的语法转换。去掉情态动词should，直接用动词原形开头，构成肯定祈使句。 3.70 percent of the earth’s water is sea water.（对划线部分提问） ________________________________________________________________________________________ 【答案】What percent of the earth’s water is sea water? 【解析】本题考查百分比的特殊疑问句语法。划线部分为百分比数字（70），用What percent提问，符合“疑问词+percent of+名词+一般疑问句”的结构。 4.There are two thousand students in our school.（对划线部分提问） ________________________________________________________________________________________ 【答案】How many students are there in your school? 【解析】本题考查具体数词的特殊疑问句语法。划线部分为具体数字（two thousand），students为可数名词复数，用How many提问，符合“ How many+可数名词复数+一般疑问句”的结构。 5.Throw rubbish into the river.（改为否定祈使句） ________________________________________________________________________________________ 【答案】Don’t throw rubbish into the river. 【解析】本题考查祈使句的否定转换语法。肯定祈使句变否定式，直接在动词原形前加Don’t。 四、语法填空。 The earth is our home. Let’s learn some important grammar about its data. First, about 71 percent of the earth’s surface 1. ________（be）covered with water. But only 3 percent of it 2. ________（be）fresh water. Second, there are 3. ________（thousand）of living things on the earth. Many of them need fresh water to live. Third, the Pacific Ocean is about 166 million square 4. ________（kilometre）. It’s the largest ocean. Finally, 5. ________（not waste）water! We should save every drop. 【答案】1.is 2.is 3.thousands 4.kilometres 5.Don’t waste 【解析】 1.考查百分比主谓一致：of后的surface为不可数名词，谓语动词用is。 2.考查百分比主谓一致：of后的it指代water（不可数），谓语动词用is。 3.考查模糊数词：无具体数字，用thousands of短语。 4.考查度量单位复数：166 million后接可数名词复数kilometres。 5.考查祈使句否定式：Don’t+动词原形waste。 五、选词填空。 hundred thousands percent don’t save is are kilometres metres plant 1.About 71 ________ of the earth’s surface is covered with water. 2.There are ________ of fish in the sea. 3.The river near our city is about 50 ________ wide. 4.Two ________ students in our school joined the water-saving activity. 5.60 percent of the flowers ________ red. 6.The Great Wall is more than 20,000 ________ long. 7.________ waste fresh water. It’s precious. 8.We should ________ more trees to protect water sources. 9.Only 3 ________ of the earth’s water is fresh. 10.The lake ________ about 200 square kilometres. 【答案】1.percent 2.thousands 3.metres 4.hundred 5.are 6.kilometres 7.Don’t 8.plant 9.percent 10.is 【解析】 1.考查“数字+percent of+名词”结构，percent无复数。 2.考查模糊数词，thousands of+可数名词复数，表“成千上万的”。 3.考查度量单位，50后接metres（米），符合“河流宽度”的计量逻辑。 4.考查具体数词，hundred前有具体数字2，用原形。 5.考查主谓一致，flowers为复数，谓语动词用are。 6.考查度量单位，20,000后接kilometres（千米），符合长城长度计量。 7.考查祈使句否定式，Don’t+动词原形，表“不要浪费”。 8.考查祈使句肯定式，should后接动词原形plant（种植）。 9.考查百分比表达，3 percent意为“3%”。 10.考查主谓一致，lake为单数，谓语动词用is。 六、完形填空。 The earth is a blue planet with many amazing data. Let’s learn grammar through these data. First, about 71 1. ________ of the earth’s surface is covered with water. But only 3 percent of it is fresh water. So we need to 2. ________ every drop. Second, there are 3. ________ of living things on the earth. But many are in danger. We should 4. ________ more trees and 5. ________ waste water. Third, the Nile River is about 6,671 6. ________ long. It’s the longest river in the world. Fourth, the Pacific Ocean covers about 166 million square 7. ________. It’s the largest ocean. Fifth, 8. ________ of people don’t have enough clean water. We should do our best to help them. Finally, 9. ________ forget the grammar rules: “数字+percent of+名词”“hundreds/thousands of+复数” and imperative sentences. 10. ________ protect our earth with correct grammar and practical actions! （ ）1. A. percent B. percents C. percentage D. percentages （ ）2. A. waste B. save C. use D. drop （ ）3. A. thousand B. thousands C. thousand of D. thousands of （ ）4. A. plant B. plants C. planting D. planted （ ）5. A. waste B. not waste C. to waste D. wasting （ ）6. A. metre B. metres C. kilometre D. kilometres （ ）7. A. kilometre B. kilometres C. metre D. metres （ ）8. A. Million B. Millions C. Million of D. Millions of （ ）9. A. Doesn’t B. Don’t C. Not D. No （ ）10. A. Let’s B. Let C. Lets D. To let 【答案】1.A 2.B 3.D 4.A 5.B 6.D 7.B 8.B 9.B 10.A 【解析】 1.考查percent的语法：不可数名词，无复数，符合“数字+percent of+名词”结构，故选A。 2.考查语境及动词辨析：结合“淡水稀少”，需“节约（save）”每一滴水，故选B。 3.考查模糊数词：thousands of+可数名词复数，固定语法结构，表“成千上万的”，故选D。 4.考查祈使句相关语法：should后接动词原形plant（种植），故选A。 5.考查否定式语法：should后接not+动词原形，符合“不浪费水”的语境，故选B。 6.考查度量单位语法：6,671后接复数kilometres（千米），符合尼罗河长度计量规则，故选D。 7.考查面积单位语法：166 million后接复数kilometres，square kilometres为“平方公里”，故选B。 8.考查模糊数词：Millions of后接people，此处of已经在横线后有了。故选B。 9.考查祈使句否定语法：Don’t+动词原形，表“不要忘记”，故选B。 10.考查祈使句的委婉表达：Let’s+动词原形，表“让我们一起”，符合号召语境，故选A。 七、阅读表格，完成下列题目。 Earth’s Data Details Percentage of water on surface 71% Percentage of fresh water 3% Total area About 510 million square kilometres Length of Changjiang River About 6,300 kilometres Length of Nile River About 6,671 kilometres Number of living things Billions （ ）1. How much of the earth’s surface is covered with water? A. 3%. B. 71%. C. 510 million. D. 6,300 kilometres. 【答案】B 【解析】本题考查百分比语法信息提取。根据表格第一行“Percentage of water on surface”对应的“71%”，符合“数字+percent”的语法表达，故选B。 （ ）2. Which is longer, the Changjiang River or the Nile River? A.The Changjiang River. B. The Nile River. C. They are the same. D. We don’t know. 【答案】B 【解析】本题考查度量单位的数词比较。根据表格数据，长江6,300 kilometres，尼罗河6,671 kilometres，通过数词大小比较得出答案，故选B。 （ ）3. What’s the total area of the earth? A.About 510 million square kilometres. B. 71% of the surface. C.About 6,671 kilometres. D. 3% of fresh water. 【答案】A 【解析】本题考查面积单位的语法表达。表格中“Total area”对应“About 510 million square kilometres”，符合“数字+单位复数+形容词”的面积表达语法，故选A。 （ ）4. 71% of the earth’s surface is covered with water. The underlined part means ________. A.in 100 B. 71 times C. 71 kinds D. 71 years 【答案】A 【解析】本题考查percent的语法含义。percent表示“百分之……”，71%即“百分之七十一”，对应“71 in 100”，故选A。 （ ）5. Which sentence is grammatically correct according to the table? A.percents of the surface is water. B.The Nile River is 6,671 kilometre long. C.3 percent of the water is fresh D.Thousands of square kilometres is the earth’s area. 【答案】C 【解析】A选项违反percent无复数的语法；B选项违反“数字+单位复数”语法；C选项符合“数字+percent of+名词，” 根据表格中“3%”信息，C选项语法正确且信息符合表格内容。及主谓一致语法；D选项违反“thousands of+复数”语法，故选C。 多任务混合阅读。 Part 1: 阅读短文，完成语法相关任务 There are many important data about our earth. Let’s learn grammar from them. First, the earth’s circumference is about 40,000 kilometres. Second, 71 percent of its surface is covered with water, but only 3 percent is fresh water. Third, there are billions of living things on the earth. Fourth, the Pacific Ocean covers about 166 million square kilometres. We should save water and protect the earth. Remember: “数字+hundred/thousand”“hundreds/thousands of” and imperative sentences. Task 1: 回答语法相关问题 1.How is “成千上万的生物” expressed in English? ________________________________________________________________________________________ 【答案】Thousands of living things 【解析】考查模糊数词语法结构，“thousands of 表示成千上万”，符合语法规则。 2.What’s the correct negative form of “Waste water”? ________________________________________________________________________________________ 【答案】Don’t waste water. 【解析】考查祈使句否定式语法，“Don’t+动词原形”为正确结构。 Task 2: 用语法结构改写句子 1.30 percent of the water is fresh.（对划线部分提问） ________________________________________________________________________________________ 【答案】What percent of the water is fresh? 【解析】考查百分比的特殊疑问句语法，用What percent提问，符合语法结构。 2.We should plant more trees.（改为祈使句） ________________________________________________________________________________________ 【答案】Plant more trees! 【解析】考查陈述句变祈使句语法，动词原形开头。 Part 2: 语法拓展与应用 核心语法拓展： 复合数词：two hundred and fifty（250）（具体数词中间加and） 祈使句委婉式：Please save water.（加Please使语气委婉） 语法句型积累： 数字+单位+形容词：The lake is 50 metres deep.（这个湖50米深） 百分数+of+名词+谓语动词：60 percent of the books are new.（60%的书是新的） Part 3: 写作训练（语法综合运用） 根据短文及语法知识，写一段关于“地球数据与节水”，要求： 1.不少于6句话； 2.至少使用3种本课时核心语法（具体数词、模糊数词、百分比、祈使句）； 3.语法正确，逻辑清晰。 ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ 【答案】（示例） Our earth is a precious blue planet. About 71 percent of its surface is covered with water, but only 3 percent is fresh water. There are billions of living things that need fresh water to live. Thousands of people don’t have enough clean water. So we must save water. Don’t waste water when brushing teeth. Turn off the tap in time. Plant more trees to protect water sources. Let’s use grammar correctly and protect our earth together. 【解析】示例运用了“71 percent/3 percent”（百分比语法）、“billions of/thousands of”（模糊数词语法）、“Don’t waste/Turn off”（祈使句语法），符合3种核心语法要求，语法结构正确。 1 / 6 学科网（北京）股份有限公司 $