Unit 3 Food matters 系动词 (语法讲解+分层精练）-2025-2026学年外研版英语七年级下册

Unit 3 Food matters （系动词） (语法讲解+分层精练） 目 录 一、语法讲解 1 （一）概念 1 （二）核心语法内容 1 1. Be动词：最基础的系动词 1 2. 感官类系动词：描述主语给人的感觉 2 3. 状态变化/保持类系动词：表示主语状态的变化或延续 2 4. 其他常用系动词 2 二、中考题型专项练习 (30题) 2 （一）单项选择 (共15题) 2 （二）用所给系动词的适当形式填空 (共10题) 3 （三）句型转换/句子改错 (共5题) 4 一、语法讲解 （一）概念 系动词，也称连系动词，是用于连接主语和表语，说明主语的身份、性质、特征或状态的动词。它本身有一定词义，但不能独立充当谓语，必须与后面的表语（通常是名词或形容词）结合，形成“系表结构”，共同构成谓语。 （二）核心语法内容 1. Be动词：最基础的系动词 形式：am, is, are (现在时)；was, were (过去时) 功能：表示主语的身份、状态或特征 例句：She is a teacher. (身份) They were happy. (状态) The sky is blue. (特征) 2. 感官类系动词：描述主语给人的感觉 常见词：look (看起来)，sound (听起来)，taste (尝起来)，smell (闻起来)，feel (摸起来；感觉) 关键特点：后接形容词作表语，描述感觉到的性质，而非副词 例句：The music sounds beautiful. (这音乐听起来很美 ) She looks happy. (她看起来很开心) 易错点：The cake tastes sweetly. (错) → The cake tastes sweet. (对) 3. 状态变化/保持类系动词：表示主语状态的变化或延续 常见词： 变得类：become, get, turn, grow, go (常指不好的变化) 保持类：keep, stay 搭配：后接形容词或名词作表语 例句：It's getting dark. (天变黑了) Leaves turn yellow in autumn. (叶子在秋天变黄) Keep quiet, please. (请保持安静) 4. 其他常用系动词 seem (似乎)：He seems tired. appear (显得)：She appears confident. prove (证明是)：His idea proved useful. 二、中考题型专项练习 (30题) （一）单项选择 (共15题) 1. The milk ________ sour. Don't drink it. A. goes B. smells C. turns D. tastes 2. —What do you think of the speech? —It ________ great, but it's a little long. A. sounds B. feels C. looks D. smells 3. Keep ________, please. The baby is sleeping. A. quiet B. quietly C. to be quiet D. be quiet 4. Her dream of becoming a teacher ________ true at last. A. grew B. turned C. came D. became 5. The food on the plate ________ delicious. Who made it? A. feels B. looks C. sounds D. touches 6. When autumn comes, leaves of the tree ________ yellow. A. get B. turn C. become D. go 7. —Mum, I'm not feeling well. —Oh, dear! You ________ a cold. Let's go to see a doctor. A. sound like B. look like C. seem like D. feel like 8. The plan ________ practical. Let's carry it out. A. tastes B. looks C. sounds D. proves 9. In winter, the days ________ shorter and the nights longer. A. get B. turn C. become D. change 10. Silk ________ soft and comfortable. A. feels B. is felt C. is feeling D. was felt 11. The story ________ interesting, but it's not true. A. sounds B. hears C. listens to D. looks 12. —You look very tired. What's wrong? —I ________ awake until midnight last night. A. stayed B. became C. turned D. grew 13. His face ________ red when he heard the news. A. changed B. went C. got D. grew 14. The idea ________ good. Let's give it a try. A. smells B. sounds C. tastes D. feels 15. Don't eat that meat. It has ________ bad. A. gone B. turned C. become D. felt （二）用所给系动词的适当形式填空 (共10题) 备选词：look, sound, taste, smell, feel, become, get, turn, go, keep, seem, stay 1. This soup ________ too salty. Did you put too much salt? 2. She ________ worried about her exam results. 3. The roses in the garden ________ wonderful. 4. You should ________ calm in an emergency. 5. His wish to travel around the world finally ________ true. 6. The milk has ________ sour. We need to buy some fresh. 7. The sky ________ dark. It might rain soon. 8. Cotton ________ comfortable to wear in summer. 9. —I'm going to Paris next month! —That ________ exciting! 10. He ________ very strong because he exercises every day. （三）句型转换/句子改错 (共5题) 1. 改错：The news sounds terribly. 2. 改错：She looked happily when she heard the good news. 3. 同义句转换：He seems to be angry. → He ________ ________. 4. 同义句转换：The tree is growing taller and taller. → The tree is ________ ________. 5. 用系动词结构翻译：这道菜闻起来很香 答案与解析 一、单项选择 1. B 牛奶“闻起来”酸了，用感官动词 smell 2. A 对“演讲”的评价，应关乎其内容听起来如何，用 sound 3. A keep 是系动词，后接形容词 quiet 作表语 4. C come true 是固定短语，意为“（梦想）实现” 5. B 食物在盘子里，评价其“看起来”美味，用 look 6. B 树叶颜色变化，常用 turn 7. B 根据“不舒服”和“感冒”的关联，应是你“看起来像”感冒了，用 look like 8. D 计划被证明是可行的，用 prove 9. A 描述白天“变”短，常用 get 10. A 丝绸“摸起来”柔软，用 feel，主动表被动 11. A 故事“听起来”有趣，用 sound 12. A stay awake 是固定搭配，意为“保持清醒” 13. B 脸“变”红，常用 go/turn red，但go red更口语化 14. B 主意“听起来”不错，用 sound 15. A 肉“变质”了，固定用 go bad 二、用所给系动词的适当形式填空 1. tastes 汤“尝起来”咸 2. looked/seemed 她“看起来/似乎”很担忧 3. smell 玫瑰“闻起来”很香 4. keep/stay “保持”冷静 5. came come true 梦想成真 6. gone/turned 牛奶“变”酸了 7. is getting/is turning 天空“正在变”暗 8. feels 棉“摸起来”舒服 9. sounds 那件事“听起来”令人兴奋 10. looks 他“看起来”很强壮 三、句型转换/句子改错 1. terribly → terrible sound 是系动词，后接形容词 terrible 2. happily → happy look 是系动词，后接形容词 happy 3. seems angry seem to be + adj. 可简化为 seem + adj. 4. becoming taller grow 作为系动词，意为“变得”，可用 become 替换 5. This dish smells delicious/nice/good. 1 学科网（北京）股份有限公司 $ Unit 3 Food matters （系动词） (语法讲解+分层精练） 目 录 一、语法讲解 1 （一）概念 1 （二）核心语法内容 1 1. Be动词：最基础的系动词 1 2. 感官类系动词：描述主语给人的感觉 2 3. 状态变化/保持类系动词：表示主语状态的变化或延续 2 4. 其他常用系动词 2 二、中考题型专项练习 (30题) 2 （一）单项选择 (共15题) 2 （二）用所给系动词的适当形式填空 (共10题) 3 （三）句型转换/句子改错 (共5题) 4 一、语法讲解 （一）概念 系动词，也称连系动词，是用于连接主语和表语，说明主语的身份、性质、特征或状态的动词。它本身有一定词义，但不能独立充当谓语，必须与后面的表语（通常是名词或形容词）结合，形成“系表结构”，共同构成谓语。 （二）核心语法内容 1. Be动词：最基础的系动词 形式：am, is, are (现在时)；was, were (过去时) 功能：表示主语的身份、状态或特征 例句：She is a teacher. (身份) They were happy. (状态) The sky is blue. (特征) 2. 感官类系动词：描述主语给人的感觉 常见词：look (看起来)，sound (听起来)，taste (尝起来)，smell (闻起来)，feel (摸起来；感觉) 关键特点：后接形容词作表语，描述感觉到的性质，而非副词 例句：The music sounds beautiful. (这音乐听起来很美 ) She looks happy. (她看起来很开心) 易错点：The cake tastes sweetly. (错) → The cake tastes sweet. (对) 3. 状态变化/保持类系动词：表示主语状态的变化或延续 常见词： 变得类：become, get, turn, grow, go (常指不好的变化) 保持类：keep, stay 搭配：后接形容词或名词作表语 例句：It's getting dark. (天变黑了) Leaves turn yellow in autumn. (叶子在秋天变黄) Keep quiet, please. (请保持安静) 4. 其他常用系动词 seem (似乎)：He seems tired. appear (显得)：She appears confident. prove (证明是)：His idea proved useful. 二、中考题型专项练习 (30题) （一）单项选择 (共15题) 1. The milk ________ sour. Don't drink it. A. goes B. smells C. turns D. tastes 2. —What do you think of the speech? —It ________ great, but it's a little long. A. sounds B. feels C. looks D. smells 3. Keep ________, please. The baby is sleeping. A. quiet B. quietly C. to be quiet D. be quiet 4. Her dream of becoming a teacher ________ true at last. A. grew B. turned C. came D. became 5. The food on the plate ________ delicious. Who made it? A. feels B. looks C. sounds D. touches 6. When autumn comes, leaves of the tree ________ yellow. A. get B. turn C. become D. go 7. —Mum, I'm not feeling well. —Oh, dear! You ________ a cold. Let's go to see a doctor. A. sound like B. look like C. seem like D. feel like 8. The plan ________ practical. Let's carry it out. A. tastes B. looks C. sounds D. proves 9. In winter, the days ________ shorter and the nights longer. A. get B. turn C. become D. change 10. Silk ________ soft and comfortable. A. feels B. is felt C. is feeling D. was felt 11. The story ________ interesting, but it's not true. A. sounds B. hears C. listens to D. looks 12. —You look very tired. What's wrong? —I ________ awake until midnight last night. A. stayed B. became C. turned D. grew 13. His face ________ red when he heard the news. A. changed B. went C. got D. grew 14. The idea ________ good. Let's give it a try. A. smells B. sounds C. tastes D. feels 15. Don't eat that meat. It has ________ bad. A. gone B. turned C. become D. felt （二）用所给系动词的适当形式填空 (共10题) 备选词：look, sound, taste, smell, feel, become, get, turn, go, keep, seem, stay 1. This soup ________ too salty. Did you put too much salt? 2. She ________ worried about her exam results. 3. The roses in the garden ________ wonderful. 4. You should ________ calm in an emergency. 5. His wish to travel around the world finally ________ true. 6. The milk has ________ sour. We need to buy some fresh. 7. The sky ________ dark. It might rain soon. 8. Cotton ________ comfortable to wear in summer. 9. —I'm going to Paris next month! —That ________ exciting! 10. He ________ very strong because he exercises every day. （三）句型转换/句子改错 (共5题) 1. 改错：The news sounds terribly. 2. 改错：She looked happily when she heard the good news. 3. 同义句转换：He seems to be angry. → He ________ ________. 4. 同义句转换：The tree is growing taller and taller. → The tree is ________ ________. 5. 用系动词结构翻译：这道菜闻起来很香 1 学科网（北京）股份有限公司 $