Unit4 Plant life（Get ready & Start up）知识点与练习（同步练）-2025-2026学年外研版（三起）英语四年级下册

Unit4 Plant life（Get ready & Start up）知识点与练习 一、核心知识点 类别 具体内容 句型结构/语法说明 重点词组/短语 1. plant life 植物的生长 2. parts of a plant 植物的各个部位 3. dig the earth 挖土 4. make a garden 建花园 5. tomato seeds 西红柿种子 6. bean seeds 豆子种子 7. cucumber seeds 黄瓜种子 8. sunflower seeds 向日葵种子 9. grow up 生长，长大 10. plant seeds 播种 重点句子 1. What are you doing? 你们正在做什么？ We're digging. 我们正在挖土。 2. For what? 为了什么？ 3. Are your seeds growing? 你们的种子正在生长吗？Yes, they are. 是的，它们在长。 4. Why aren't my seeds growing? 为什么我的种子没有在生长？ 5. These seeds can't grow! 这些种子不能生长！ 主语 + can't + 动词原形（情态动词can的否定式） 6. Let me plant a new one. 让我种一颗新的吧。 Let sb. + 动词原形（祈使句，让某人做某事） 重点语法 1. 现在进行时：表示正在进行的动作，结构为主语 + am/is/are + 动词的现在分词 - 主语为I用am；单数名词/代词用is；复数名词/代词/you用are - 动词现在分词变化：一般直接加-ing（dig→digging，make→making） 2. 情态动词can的否定式：can't + 动词原形，表示“不能做某事” 3. Let型祈使句：Let + 人称代词宾格 + 动词原形，表示提议、建议 二、基础练习 （一）核心词汇&句型练习 1.根据中文提示补全短语 (1) 植物的部位 ______ of a ______ (2) 向日葵种子 ______ seeds (3) 建一个小花园 ______ a small ______ (4) 播种 ______ ______ (5) 挖土 ______ 2.按要求改写句子 (1) We are making a garden.（对划线部分提问）________________ (2) His seeds are growing.（改为一般疑问句并作否定回答）________________ (3) The students are planting bean seeds.（改为否定句）________________ (4) Let's dig the earth.（改为同义句）______ ______ dig the earth. （二）重点语法练习 1.用所给动词的适当形式填空 (1) What ______ you ______ (do)? I ______ (water) the flowers. (2) They ______ (not plant) tomato seeds now. (3) ______ Sam ______ (grow) sunflower seeds? No, he ______. (4) Look! The girl ______ (pick) leaves from the plant. 2.用can/can't填空 (1) The little boy ______ water the plants by himself. He is too young. (2) These seeds ______ grow in the cold weather. (3) I ______ dig the earth. Let me help you! 3.按要求完成Let型祈使句 (1) ______ (让她) plant a new seed. (2) Let ______ (我们) make a garden for the class. (3) Let Mike ______ (water) the wheat. 三、拓展性综合练习 （一）选词填空（用所给词的适当形式）dig , grow, plant, make, water 1. My mother ______ a beautiful garden in our yard last year, and now she ______ flowers in it. 2. ______ the earth first, then ______ the sunflower seeds. 3. The farmer ______ the wheat every morning, so the wheat ______ well now. （二）单项选择题 （ ）1. —______ are you doing? —I'm planting cucumber seeds. A. What B. Why C. Where （ ）2. —Are the bean seeds growing? —______ A. Yes, it is. B. No, they aren't. C. Yes, they do. （ ）3. Let ______ show you how to plant seeds. A. I B. my C. me （ ）4. The seeds ______ grow because there is no water. A. can B. can't C. aren't （ ）5. Look! The children ______ a small garden for their class. A. make B. are making C. makes （三）选择合适的句子补全对话 A: Hello, Sam! 1.______A. What are you doing there? B. Where are you? C. Are you ready to plant the seeds? D. For what? E. What seeds do you have? B: I'm in the school garden. A: 2.______ B: I'm digging the earth with my classmates. A: 3.______ B: For our class. We want to make a small garden. A: 4.______ B: We have tomato seeds and sunflower seeds. A: 5.______ B: Yes, we are. We will plant them this afternoon. （四）连词成句 1. doing, what, they, are (?) ________________ 2. growing, seeds, my, aren't (.) ________________ 3. let, a, me, seed, new, plant (.) ________________ 4. are, we, bean, seeds, planting (.) ________________ 5. can't, these, grow, seeds (.) ________________ （五）阅读理解（判断正T/误F） Hello, I'm Lily. I love plants. Today I'm in the school garden with my friends. We are making a small garden for our class. First, we dig the earth. Then, we plant some flower seeds and pea seeds. My friend Amy is watering the seeds now. I think the seeds can grow well in the warm sun. We check the seeds every day. I hope we can see the small leaves soon. It's fun to grow plants with friends! 判断下列句子正(T)误(F)： （ ）1. Lily is in the park with her friends today. （ ）2. They are making a small garden for their class. （ ）3. They plant flower seeds and sunflower seeds. （ ）4. Amy is watering the seeds now. （ ）5. Lily thinks the seeds can grow well in the warm sun. 四、练习答案与解析 （一）针对性基础练习答案与解析 1. 核心词汇&句型练习 (1) parts; plant (2) sunflower (3) make; garden (4) plant seeds (5) dig 解析：考察本课时核心短语，直接对应教材原词，注意seed/plant等名词的单复数。 (1) What are you doing? 解析：对“正在做的动作”提问，用现在进行时特殊疑问句结构What are + 主语 + doing? (2) Are his seeds growing? No, they aren't. 解析：现在进行时一般疑问句将be动词提前，否定回答用No, 主语 + be not. (3) The students aren't planting bean seeds. 解析：现在进行时否定式直接在be动词后加not，即are not=aren't (4) Let us 解析：Let's = Let us，均表示“让我们”。 2. 重点语法练习 (1) are; doing; am watering 解析：you搭配are，I搭配am，现在进行时用“be+doing”。 (2) aren't planting 解析：复数主语they搭配are，否定式为aren't，后接planting。 (3) Is; growing; isn't 解析：单数主语Sam搭配is，一般疑问句将is提前，否定回答用isn't。 (4) is picking 解析：Look!是现在进行时标志词，单数主语the girl搭配is，pick的现在分词为picking。 (1) can't (2) can't (3) can 解析：根据句意判断“能否做某事”，too young（太小）、cold weather（寒冷天气）表示“不能”，Let me help you表示“能”。 (1) Let her (2) us (3) water 解析：Let后接人称代词宾格（she→her，我们→us），且后接动词原形。 （二）拓展性综合练习答案与解析 1. 选词填空 1. made; is planting 解析：last year是一般过去时标志，make的过去式为made；now是现在进行时标志，she搭配is，plant的现在分词为planting。 2. Dig; plant 解析：祈使句用动词原形开头，表动作先后，先挖土再播种。 3. waters; is growing 解析：every morning是一般现在时标志，farmer是单数，water用第三人称单数waters；now是现在进行时标志，wheat是不可数名词，搭配is growing。 2. 单项选择题 1. A 解析：对“正在做的动作”提问用What。 2. B 解析：seeds是复数，答语用they，现在进行时一般疑问句答语用be动词。 3. C 解析：Let后接人称代词宾格，I的宾格是me。 4. B 解析：根据“没有水”可知种子“不能”生长，can't后接动词原形grow。 5. B 解析：Look!是现在进行时标志，结构为be+doing。 3. 补全对话 1.B 2.A 3.D 4.E 5.C 解析：根据答语匹配问句，答语“在学校花园”对应问地点Where；答语“正在挖土”对应问动作What are you doing?；答语“为了我们班”对应问目的For what?；答语“有西红柿和向日葵种子”对应问What seeds do you have?；答语“Yes, we are.”对应一般疑问句Are you ready to plant the seeds?。 4. 连词成句 1. What are they doing? 2. My seeds aren't growing. 3. Let me plant a new seed. 4. We are planting bean seeds. 5. These seeds can't grow. 解析：注意标点和句型结构，特殊疑问句将疑问词提前，祈使句以Let开头，否定句将not/ can't放在对应位置。 5. 阅读理解 1.F 解析：原文是in the school garden，不是park。 2.T 解析：原文直接出现We are making a small garden for our class. 3.F 解析：原文是flower seeds and pea seeds，不是sunflower seeds。 4.T 解析：原文直接出现My friend Amy is watering the seeds now. 5.T 解析：原文直接出现I think the seeds can grow well in the warm sun. 学科网（北京）股份有限公司 $