Unit 5 Grammar课件 2025-2026学年沪教版英语七年级下册

Unit 5 Water is life Grammar: Talking about quantities 1 Today’s Goals After this lesson, I will be able to: Summarize how to describe quantities and use them in conversations. Read the dialogues, understand their meanings accurately, and help the speakers solve their problems. Use the target grammar to talk about the amount of food stored at home, so as to take a more active part in family life. 2 Lead in: Scene One During the summer vacation, Du Yun went on a trip with her parents. On the way to their vacation destination, Du Yun repeat to her parents the journey of a drop of water. 3 Scene Two Du Yun’s family were caught by a sudden storm when they were on holiday.They are checking the quantities of water and drinks in their beach house. What can you see in the fridge? orange watermelon onion apple tomato egg milk orange juice beef cooking oil sugar yogurt water beer pizza coffee salad Countable nouns Uncountable nouns 4 指不能以数目来计算，不可以分成个体、状态、品质、感情或表示物质材料的东西；它没有复数形式。 可数名词 不可数名词 an apple apples milk rice 指可以分为个体，且可直接用数目进行计数的名词，一般有单数与复数两种形式，可以用a/an或具体数词来修饰。 More nouns 可数名词复数的规则变化 1. book—books student— pen— desk— 2. bus—buses box— glass— watch— 3. baby—babies story— city— 4. thief—thieves life— leaf— 5. hero—heroes tomato— potato— 6. photo—photos piano— kilo— Look and review desks pens students boxes glasses watches stories cities lives leaves tomatoes potatoes pianos kilos Look and review 1.单数变复数 【规则变化】 一般：+s; kite—kites 二般：以s/x/sh/ch结尾+es; box—boxes brush—brushes 三般：以辅音+y结尾，y变ies; baby—babies 1.单数变复数 【规则变化】 四般： 以f/fe结尾，f/fe 变 ves; 五般：以o结尾，有生命 + es，无生命 + s 半片叶子自己黄； half-halves; leaf-leaves; self-selves 妻子拿刀去杀狼； wife-wives; knife-knives; wolf-wolves 小偷逃命架后藏。 thief-thieves; life-lives；shelf-shelves 英雄(hero)爱吃西红柿(tomato)，土豆(potato)和芒果(mango) 表示某国人或民族的单复数变化 口诀：“中日不变英法变，其他-s加后面” “中日不变” Chinese→Chinese， Japanese→Japanese “英法变a为e” Englishman→Englishmen， Frenchman→Frenchmen “其他-s加后面” German→Germans， American→Americans， Australian→Australians， Canadian→Canadians， Indian→Indians 单数变复数 【不规则变化】 (1) 男人女人a变e。例如：man→men, woman→women fireman→firemen, policeman→policemen (3) 单复永不变：三种动物，两种人。 例如：sheep, deer, fish, Chinese, Japanese等。 (4) 改变词尾。例如：mouse→mice, child→children (6) 注意有些名词既可数，又不可数，意义不同。 例如：fish, chicken, glass, space, room, orange等。 (2) oo变ee。例如：goose→geese, foot→feet, tooth→teeth (5) 合成名词-：①把中心词变复数 flower shop→flower shops ② man/woman+职业，a woman doctor→two women doctors Look and review 1.不可数名词的 特殊用法 不可数名词表数量，需加量词短语 结构：数词/限定词+量词+of+不可数名词 a piece of meat a box of milk a bowl of rice three boxes of milk three pieces of meat three bowls of rice Scene Two Observe and sum up the rules. 14 Work out the rules 15 Exercises 提问与回答 (much, many, a little, a few) 1. A: How __________ sugar do you take in your coffee? B: I take __________ sugar in my coffee. 2. A: How __________ friends do you have? B: I have __________ friends. 3. A: How __________ homework do you have today? B: I have __________ homework today. 4. A: How __________ water do you drink every day? B: I drink __________ water every day. 5. A: How __________ pencils are there in your bag? B: There are __________ pencils in my bag. much a little many a few much a little much much many a few 1.a few +可数名词的复数，表示肯定；表示否定时用 few. 2. a little +不可数名词，表示肯定；表示否定时用 little. Rule2 we use a lot of in positive sentences. many (1) We have to stay in the city for_______ days. (2) There are _______ books on the desk. (3) There is not ______ fresh water on earth . (4) He always puts _______ sugar in his coffee . (5) There’s ______food left in the fridge. (6)I have _______ money on me. (7) There are not_______new words in the article. Exercises Fill in the blanks with a lot of, a little, a few, much, many, no a few many much no a lot of a little Rule1 we use many in positive sentences and negative sentences. Rule3 we use much in negative sentences. Scene Two They need They have Su Mei and Su Wen want to cook orange beef. They are checking whether they have enough ingredients (原料). Work in pairs, compare the two pictures. Find the quantity relationship between required ingredients and existing ingredients. For example： They have enough orange juice, but they don’t have any onions. 18 Complete their conversation with enough, how many, how much, a little, much or a lot of. How many How much much a little enough / a lot of Scene Two 19 Grammar in use Role-play a conversation between a parent and a child. Ask each other about what food you have at home and whether it is enough for a week. Tips 1. Discuss the quantity of food 2. Talk about whether it can last a week's use. 20 Grammar in use S1: Mum, do we have enough food for a week? S2: No. We need to go to the supermarket to buy something. S1: Do we have enough ...? S2: No. We only have ... S1: What about ...? How much/many... do we have? S2: We have enough ... for a week.. Role-play a conversation between a parent and a child. Ask each other about what food you have at home and whether it is enough for a week. 21 Exercises Last Saturday, Emily and her mother went shopping for the week. They looked inside the fridge (1)______(one) to see what they needed. Emily opened the fridge and asked, “How much milk do we have?” Her mother checked and said there was only a little left. They needed to buy two (2)______(bottle) .Then Emily looked at the vegetables. “We have no onions,” she said. “We should buy some.” Her mother (3)_______(agree) and wrote it down. “How many eggs do we have?” she asked. Emily counted the eggs. “Only three,” she replied. “We need (4)_____(many).” They also checked the fruit. There were apples and bananas, but they had no oranges. Emily said, “Let’s get some oranges too.” After (5)________(make) the list, they went to the supermarket. It was not far, (6)____ they walked there.Inside the store, Emily picked (7)_____ a basket. Her mother reminded (8)______(she), “Don’t buy too much junk food.”Emily smiled and said, “I will buy only what we need.” They found everything on their list (9) _______(easy) . Emily was happy because she saw her favorite yogurt on sale. When they got home, Emily put the food away. Her father came into the kitchen and said, “You did (10)_____great job.” Emily said, “Now we have enough food for the whole week.” easily so agreed first making up her a more bottles Fill in the blanks. Summary 重点单词（数量相关） Key Words (Quantity-related) 许多；大量 a lot of / lots of 一些；几个（可数） a few 一些；少量（不可数） a little 足够的 enough 许多（可数） many 许多（不可数） much 没有；无 no 多少（可数） how many 多少（不可数） how much 碗里有一点米饭。 There is a little rice in the bowl. 桌子上有几本书。 There are a few books on the table. 他喝了很多水，因为天气很热。 He drank a lot of water because the weather was very hot. 23 Summary 重点短语 Key Phrases 一瓶水 a bottle of water 几本书 a few books 一点牛奶 a little milk 足够的时间 enough time 太多垃圾 too much rubbish 太多苹果 too many apples 重点句子 Key Sentences 冰箱里有多少瓶牛奶？只有两瓶。 How many bottles of milk are there in the fridge? Only two. 我们没有足够的水，只有两升。 We don’t have enough water. We’ve only got two litres. 24 Summary 修饰可数名词复数 few a few several many a great/good many a number of a large/great number of 修饰不可数名词 little a little much a good/great deal of a bit of 既可修饰可数 也可修饰不可数 some a lot of lots of plenty of all most 单位词作修饰语：a pair of, a piece of, a box of, a bag of, a cup of, a glass of, a group of, a bar of, a drop of 25 评价内容 自评（1-5分） 1. 我能根据思维导图复述水循环过程。 1 2 3 4 5 2. 我能准确使用a lot of, a little, a few, enough, much, many和no来表达可数名词或不可数名词的数量。 1 2 3 4 5 3. 我能用描述数量的相关表达造句。 1 2 3 4 5 4. 我能积极参加小组活动。 1 2 3 4 5   Evaluation Homework 挑战层： 以周为单位，使用课上所学的知识记录自己在家里以及学校里的水、食物以及主要生活用品的消耗情况。一周后，同学们分享并比较，观察是否有浪费情况，并给予彼此反馈。 基础层： 1.掌握本课表达数量的词汇和语法规则。 2.熟练朗读本课对话。 提高层： 观察教室中的物品，使用本课所学的知识描述物品的数量，形成一篇简要的报告。 27 Thank you! 28 $