Unit 3 语法专练 2025-2026学年外研版七年级英语下册

2026-02-28
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学段 初中
学科 英语
教材版本 初中英语外研版七年级下册
年级 七年级
章节 Unit 3 Food matters
类型 题集-专项训练
知识点 -
使用场景 同步教学-单元练习
学年 2026-2027
地区(省份) 全国
地区(市) -
地区(区县) -
文件格式 DOCX
文件大小 41 KB
发布时间 2026-02-28
更新时间 2026-02-28
作者 匿名
品牌系列 -
审核时间 2026-02-28
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内容正文:

外研版7下第三单元语法专练 系动词 第一部分:知识点 一、什么是系动词? 系动词,也称为连系动词,是连接主语和表语的动词。它本身有一定的词义,但不能单独作谓语,后面必须跟表语(也称为主语补足语),一起构成“系表结构”,用来说明主语的状态、特征、身份等。 简单定义: 系动词是用来连接主语和描述主语的词的动词。 基本结构: 主语 + 系动词 + 表语 表语可以是名词、形容词、介词短语等。 例句: 她很漂亮。 She is beautiful. 这里的is是系动词,beautiful是形容词作表语 他成了一名老师。 He became a teacher. 这里的became是系动词,a teacher是名词作表语 这本书很有趣。 This book is interesting. 这里的is是系动词,interesting是形容词作表语 她看起来很开心。 She looks happy. 这里的looks是系动词,happy是形容词作表语 二、系动词的核心作用 系动词的核心作用是把主语和描述主语的词语连接起来。没有系动词,句子就不完整。 对比: 她漂亮。 She beautiful. 这句话缺少动词,是错误的 她很漂亮。 She is beautiful. 这句话正确,is连接了She和beautiful 他成了一名医生。 He became a doctor. became连接了He和a doctor 她看起来累了。 She looks tired. looks连接了She和tired 三、系动词的分类 系动词可以分为以下几大类: 1. 状态系动词 最核心的系动词是be动词的各种形式,表示主语所处的状态。 be动词: am, is, are, was, were 例句: 我是一名学生。 I am a student. 她很聪明。 She is smart. 他们在教室里。 They are in the classroom. 昨天很冷。 Yesterday was cold. 我们当时很兴奋。 We were excited. 2. 感官系动词 这类系动词表示人的感官感觉,后面通常接形容词作表语。 常见感官系动词: look 看起来 sound 听起来 smell 闻起来 taste 尝起来 feel 感觉,摸起来 例句: 她看起来很累。 She looks tired. 那个主意听起来不错。 That idea sounds great. 这花闻起来很香。 The flower smells sweet. 这汤尝起来很美味。 The soup tastes delicious. 这块布料摸起来很软。 This cloth feels soft. 我感觉不舒服。 I feel sick. 3. 变化系动词 这类系动词表示主语从一种状态转变为另一种状态。 常见变化系动词: become 变得,成为 get 变得 turn 变得(通常指颜色、天气的变化) grow 渐渐变得 go 变得(通常指变坏) come 变得(通常指变好) fall 进入某种状态 例句: 她成了一名医生。 She became a doctor. 天气变冷了。 It is getting cold. 树叶变黄了。 The leaves turn yellow in autumn. 他渐渐变得强壮。 He grew strong. 牛奶变酸了。 The milk went sour. 梦想成真了。 Dreams come true. 他睡着了。 He fell asleep. 4. 持续系动词 这类系动词表示主语继续保持某种状态。 常见持续系动词: keep 保持 stay 保持 remain 仍然,保持 continue 继续 例句: 请保持安静。 Please keep quiet. 她一直单身。 She stayed single. 他仍然沉默。 He remained silent. 天气持续温暖。 The weather continued warm. 5. 表象系动词 这类系动词表示“看起来,似乎”,强调给人的印象。 常见表象系动词: seem 似乎,好像 appear 显得,似乎 look 看起来 例句: 他似乎很开心。 He seems happy. 她显得很自信。 She appears confident. 他看起来很年轻。 He looks young. 四、常用系动词详解 1. be动词 be动词是最基本、最常用的系动词,有八种形式:am, is, are, was, were, being, been。 例句: 我是中国人。 I am Chinese. 她是一名护士。 She is a nurse. 他们是我的朋友。 They are my friends. 昨天是星期一。 Yesterday was Monday. 我们当时很忙。 We were busy. 2. look look 作为系动词,意思是“看起来”,后面接形容词。 例句: 她看起来很漂亮。 She looks beautiful. 你看起来很累。 You look tired. 他看起来很开心。 He looks happy. 这件衣服看起来很贵。 This dress looks expensive. 注意: look 也可以用作实义动词,意思是“看”,后面接at。 看黑板。 Look at the blackboard. 3. sound sound 作为系动词,意思是“听起来”,后面接形容词。 例句: 那个主意听起来不错。 That idea sounds good. 她的声音听起来很甜美。 Her voice sounds sweet. 这首歌听起来很熟悉。 This song sounds familiar. 他的解释听起来合理。 His explanation sounds reasonable. 4. smell smell 作为系动词,意思是“闻起来”,后面接形容词。 例句: 这花闻起来很香。 The flower smells sweet. 这鱼闻起来不新鲜。 The fish smells bad. 厨房里闻起来很香。 The kitchen smells good. 注意: smell 也可以用作实义动词,意思是“闻”。 我在闻这朵花。 I am smelling the flower. 5. taste taste 作为系动词,意思是“尝起来”,后面接形容词。 例句: 这汤尝起来很美味。 The soup tastes delicious. 这药尝起来很苦。 The medicine tastes bitter. 这个蛋糕尝起来很甜。 The cake tastes sweet. 注意: taste 也可以用作实义动词,意思是“品尝”。 厨师在尝汤。 The chef is tasting the soup. 6. feel feel 作为系动词,意思是“感觉,摸起来”,后面接形容词。 例句: 我感觉很开心。 I feel happy. 这块布料摸起来很软。 This cloth feels soft. 她感觉不舒服。 She feels sick. 今天感觉很暖和。 It feels warm today. 注意: feel 也可以用作实义动词,意思是“触摸”。 她在摸小猫。 She is feeling the cat. 7. become become 表示“变得,成为”,强调变化的过程或结果。 例句: 她成了一名医生。 She became a doctor. 天气变冷了。 It became cold. 他变得更有信心了。 He became more confident. 这个问题变得严重了。 The problem became serious. 8. get get 表示“变得”,常用于口语,后接形容词。 例句: 天气变热了。 It is getting hot. 她累了。 She got tired. 他们结婚了。 They got married. 别生气。 Don't get angry. 9. turn turn 表示“变得”,常指颜色、天气、性质的变化。 例句: 树叶变黄了。 The leaves turned yellow. 她的脸变红了。 Her face turned red. 牛奶变酸了。 The milk turned sour. 天气变冷了。 The weather turned cold. 10. grow grow 表示“渐渐变得”,强调渐变的过程。 例句: 他渐渐变老了。 He grew old. 她渐渐习惯了。 She grew accustomed to it. 天渐渐黑了。 It grew dark. 他变得不耐烦了。 He grew impatient. 11. keep keep 表示“保持”,强调维持某种状态。 例句: 请保持安静。 Please keep quiet. 保持健康。 Keep healthy. 他们一直保持着联系。 They kept in touch. 12. stay stay 表示“保持”,与keep类似,强调状态的持续。 例句: 请保持冷静。 Stay calm. 这家店一直营业到晚上。 The shop stays open until evening. 他们一直是朋友。 They stayed friends. 13. remain remain 表示“仍然保持”,强调没有改变。 例句: 他仍然沉默。 He remained silent. 这个问题仍然存在。 The problem remains unsolved. 他们仍然是朋友。 They remained friends. 14. seem seem 表示“似乎,好像”,强调主观印象。 例句: 他似乎很忙。 He seems busy. 她似乎很开心。 She seems happy. 这似乎是个好主意。 This seems a good idea. 15. appear appear 表示“显得,似乎”,与seem类似,但更强调外表。 例句: 他显得很自信。 He appears confident. 她显得比实际年龄年轻。 She appears younger than her age. 这似乎是个简单的问题。 This appears an easy question. 五、系动词与实义动词的区别 很多动词既可以作系动词,也可以作实义动词,意义和用法不同。 1. look 的两种用法 系动词:看起来 她看起来很漂亮。 She looks beautiful. 实义动词:看 她正在看窗外。 She is looking out of the window. 2. sound 的两种用法 系动词:听起来 那个主意听起来不错。 That idea sounds good. 实义动词:使发出声音 他按响了喇叭。 He sounded the horn. 3. smell 的两种用法 系动词:闻起来 这花闻起来很香。 The flower smells sweet. 实义动词:闻 我在闻这朵花。 I am smelling the flower. 4. taste 的两种用法 系动词:尝起来 这汤尝起来很美味。 The soup tastes delicious. 实义动词:品尝 厨师在尝汤。 The chef is tasting the soup. 5. feel 的两种用法 系动词:感觉,摸起来 我感觉很开心。 I feel happy. 实义动词:触摸 她在摸小猫。 She is feeling the cat. 6. 区分方法 判断一个动词是系动词还是实义动词,可以看它后面跟什么词。 系动词后面通常跟形容词作表语,描述主语的状态。 实义动词后面通常跟名词作宾语,表示动作的对象。 对比: 她看起来很漂亮。 She looks beautiful. looks是系动词,后面是形容词beautiful 她正在看一幅画。 She is looking at a picture. looking是实义动词,后面是介词短语at a picture 六、系动词的常见句型 1. 主语 + 系动词 + 形容词 这是最常见的系表结构,用形容词描述主语的特征。 例句: 她很聪明。 She is smart. 天气变冷了。 It is getting cold. 这花闻起来很香。 The flower smells sweet. 他看起来很开心。 He looks happy. 2. 主语 + 系动词 + 名词 系动词后面接名词,说明主语的身份或类别。 例句: 她成了一名老师。 She became a teacher. 他一直是个好朋友。 He remained a good friend. 这似乎是个好机会。 This seems a good opportunity. 3. 主语 + 系动词 + 介词短语 系动词后面接介词短语,说明主语的位置或状态。 例句: 他在家。 He is at home. 她处于危险中。 She is in danger. 他们一直保持联系。 They kept in touch. 4. 主语 + 系动词 + 不定式 有些系动词后面可以接不定式,常见的有seem, appear等。 例句: 他似乎知道答案。 He seems to know the answer. 她显得很有钱。 She appears to be rich. 这个建议证明是有效的。 The suggestion proved to be effective. 第二部分:精选练习题 一、单项选择 1. The flower ________ sweet. Everyone in the room likes it. A. smells B. is smelling C. smell 2. She ________ very happy when she heard the good news. A. looked B. was looking C. looks 3. The soup ________ delicious. Can I have some more? A. is tasting B. tastes C. taste 4. It ________ colder and colder. We need to wear more clothes. A. is getting B. gets C. got 5. He ________ a teacher after graduation. A. became B. becomes C. has become 6. The music ________ wonderful. I love it. A. sounds B. is sounding C. sound 7. Please ________ quiet. The baby is sleeping. A. keep B. to keep C. keeping 8. Her face ________ red when she heard the compliment. A. turned B. was turning C. turns 9. This idea ________ good. Let's try it. A. sounds B. is sounding C. sound 10. They ________ friends for many years. A. remained B. were remaining C. remain 11. The sky ________ dark. It's going to rain. A. is getting B. gets C. got 12. She ________ tired after the long walk. A. felt B. was feeling C. feels 13. The cloth ________ soft. I want to buy it. A. feels B. is feeling C. feel 14. He ________ angry when he heard the news. A. became B. was becoming C. becomes 15. The plan ________ perfect. Everyone agreed. A. seemed B. was seeming C. seems 16. Please ________ calm. Everything will be fine. A. stay B. to stay C. staying 17. The milk ________ sour. Don't drink it. A. has gone B. goes C. is going 18. She ________ younger than her age. A. looks B. is looking C. look 19. The problem ________ unsolved for years. A. remained B. was remaining C. remains 20. His voice ________ familiar. I think I know him. A. sounds B. is sounding C. sound 二、用所给词的适当形式填空 1. The flowers ________ (smell) sweet in spring. 2. She ________ (look) tired after working all day. 3. The soup ________ (taste) a little salty. 4. It ________ (get) dark. Let's go home. 5. He ________ (become) a successful businessman in his thirties. 6. The music ________ (sound) beautiful. What is it? 7. Please ________ (keep) quiet in the library. 8. Her dream finally ________ (come) true. 9. The leaves ________ (turn) yellow in autumn. 10. She ________ (feel) happy when she saw her old friend. 11. The idea ________ (seem) interesting. Let's discuss it. 12. He ________ (remain) single all his life. 13. The weather ________ (grow) colder day by day. 14. This cloth ________ (feel) very soft. 15. She ________ (appear) nervous during the interview. 16. The milk ________ (go) bad. Throw it away. 17. They ________ (stay) friends even after graduation. 18. His voice ________ (sound) strange on the phone. 19. The problem ________ (prove) to be more difficult than expected. 20. She ________ (look) beautiful in that dress. 三、句型转换 1. She seems happy. 改为否定句 She ________ ________ happy. 2. The soup tastes delicious. 改为一般疑问句 ________ the soup ________ delicious? 3. He became a doctor. 对划线部分提问 ________ ________ he ________? 4. The flowers smell sweet. 改为否定句 The flowers ________ ________ sweet. 5. She looks tired. 改为一般疑问句 ________ she ________ tired? 6. The weather got cold. 对划线部分提问 ________ ________ the weather ________? 7. He remained silent. 改为否定句 He ________ ________ silent. 8. The idea sounds great. 改为一般疑问句 ________ the idea ________ great? 9. She felt happy. 对划线部分提问 ________ ________ she ________? 10. The milk went sour. 改为否定句 The milk ________ ________ sour. 四、改错题 1. The flower smells sweetly. ________ 应改为 ________ 2. She is looking tired today. ________ 应改为 ________ 3. The soup is tasting delicious. ________ 应改为 ________ 4. He became to like the city. ________ 应改为 ________ 5. The music sounds beautifully. ________ 应改为 ________ 6. She felt happily when she heard the news. ________ 应改为 ________ 7. The cloth is feeling soft. ________ 应改为 ________ 8. He seems know the answer. ________ 应改为 ________ 9. She looks angrily at me. ________ 应改为 ________ 10. The idea is seeming good. ________ 应改为 ________ 五、根据汉语意思完成句子 1. 这花闻起来很香。 The flower ________ ________. 2. 她看起来很累。 She ________ ________. 3. 汤尝起来很美味。 The soup ________ ________. 4. 天气变冷了。 It ________ ________. 5. 他成了一名医生。 He ________ a ________. 6. 请保持安静。 Please ________ ________. 7. 她的脸变红了。 Her face ________ ________. 8. 这个主意听起来不错。 This idea ________ ________. 9. 她感觉很开心。 She ________ ________. 10. 他们一直是朋友。 They ________ ________. 第三部分:参考答案与详细解析 一、单项选择答案与解析 1. A smell 是感官系动词,表示“闻起来”,用一般现在时,主语flower是单数,用smells。 2. A looked 是系动词,表示“看起来”,描述过去的状态。 3. B tastes 是感官系动词,表示“尝起来”,表示状态时不用进行时。 4. A is getting 表示渐变的过程,用现在进行时表示“正在变冷”。 5. A became 是become的过去式,表示过去某个时间成为老师。 6. A sounds 是感官系动词,表示“听起来”,用一般现在时。 7. A keep 是祈使句,用动词原形,表示“保持安静”。 8. A turned 是系动词,表示“变得”,描述过去脸变红。 9. A sounds 是感官系动词,表示“听起来”,用一般现在时。 10. A remained 是系动词,表示“仍然是”,描述过去多年的状态。 11. A is getting 表示渐变的过程,用现在进行时表示“正在变暗”。 12. A felt 是系动词,表示“感觉”,描述过去的感觉。 13. A feels 是感官系动词,表示“摸起来”,用一般现在时。 14. A became 是系动词,表示“变得”,描述过去变得生气。 15. A seemed 是系动词,表示“似乎”,描述过去似乎完美。 16. A stay 是祈使句,用动词原形,表示“保持冷静”。 17. A has gone 表示状态的变化,用现在完成时强调结果“已经变酸了”。 18. A looks 是感官系动词,表示“看起来”,用一般现在时。 19. A remained 是系动词,表示“仍然是”,描述过去多年的状态。 20. A sounds 是感官系动词,表示“听起来”,用一般现在时。 二、用所给词的适当形式填空答案与解析 1. smell 感官系动词,用一般现在时,主语flowers是复数,用smell。 2. looks 感官系动词,用一般现在时,主语she是单数,用looks。 3. tastes 感官系动词,用一般现在时,主语soup是单数,用tastes。 4. is getting 表示渐变的过程,用现在进行时。 5. became 表示过去成为,用过去式。 6. sounds 感官系动词,用一般现在时。 7. keep 祈使句,用动词原形。 8. came come true是固定短语,用过去式。 9. turn 表示客观事实,用一般现在时。 10. felt 表示过去的感觉,用过去式。 11. seems 表示现在的感觉,用一般现在时。 12. remained 表示过去的状态,用过去式。 13. is growing 表示渐变的过程,用现在进行时。 14. feels 感官系动词,用一般现在时。 15. appeared 表示过去的状态,用过去式。 16. has gone 表示状态的变化,用现在完成时。 17. stayed 表示过去的状态,用过去式。 18. sounded 表示过去的状态,用过去式。 19. proved 表示过去的结果,用过去式。 20. looks 感官系动词,用一般现在时。 三、句型转换答案与解析 1. doesn't seem 否定句,在seems前加doesn't,动词用原形。 2. Does / taste 一般疑问句,用Does开头,动词用原形。 3. What did / become 对a doctor提问,用What did he become。 4. don't smell 否定句,在smell前加don't。 5. Does / look 一般疑问句,用Does开头,动词用原形。 6. How did / get 对cold提问,用How did the weather get。 7. didn't remain 否定句,用didn't加动词原形。 8. Does / sound 一般疑问句,用Does开头,动词用原形。 9. How did / feel 对happy提问,用How did she feel。 10. didn't go 否定句,用didn't加动词原形。 四、改错题答案与解析 1. smells sweetly 应改为 smells sweet 系动词后用形容词。 2. is looking 应改为 looks 表示状态时不用进行时。 3. is tasting 应改为 tastes 表示状态时不用进行时。 4. became to like 应改为 came to like 或 began to like become后面不能接不定式。 5. sounds beautifully 应改为 sounds beautiful 系动词后用形容词。 6. felt happily 应改为 felt happy 系动词后用形容词。 7. is feeling 应改为 feels 表示状态时不用进行时。 8. seems know 应改为 seems to know seem后面接不定式。 9. looks angrily 应改为 looks angry looks是系动词,后面用形容词;或者改为 looks at me angrily,此时looks是实义动词。 10. is seeming 应改为 seems seem表示状态,不用进行时。 五、根据汉语意思完成句子答案与解析 1. smells sweet 感官系动词后用形容词。 2. looks tired 感官系动词后用形容词。 3. tastes delicious 感官系动词后用形容词。 4. is getting cold 表示渐变过程。 5. became / doctor 表示过去成为医生。 6. keep quiet 祈使句用动词原形。 7. turned red 表示脸变红。 8. sounds good 感官系动词后用形容词。 9. felt happy 表示过去的感觉。 10. remained friends 表示一直是朋友。 学科网(北京)股份有限公司 $

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Unit 3 语法专练 2025-2026学年外研版七年级英语下册
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Unit 3 语法专练 2025-2026学年外研版七年级英语下册
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Unit 3 语法专练 2025-2026学年外研版七年级英语下册
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