Unit 3 单元一课一练 2024-2025学年沪教版英语七年级下册

沪教版7年级下册第3单元一课一练(含答案) 1. 现在进行时(The Present Continuous Tense) (1)结构:am/is/are + 动词-ing (2)用法: 1 表示说话时正在进行的动作。 2 表示现阶段正在进行的动作(可能说话时未发生)。 3 表示未来计划或安排。 动词-ing形式构成规则: 规则 示例 普通动词直接加-ing feel feeling 以不发音的-e结尾的动词去-e加-ing write writing 以-ie结尾的动词变-ie为-y加-ing tie tying 元音+辅音结尾的动词双写辅音加-ing run running (3)不用于现在进行时的动词: 表示状态或情感的动词:believe, know, like, love, hate, want, prefer, realize, understand, hear 例句1:She is watering the plants now. 她现在正在给植物浇水。 例句2:They are discussing how to protect trees. 他们正在讨论如何保护树木。 练习题 1.用现在进行时填空: Look! The students _ (plant) trees in the park. 2.改错:I am wanting to buy a new book about trees. 3. 翻译:他现在正在写一篇关于茶文化的文章。 4.选择正确的动词形式: The children _ (is/are) playing near the pine tree. 5.将句子改为现在进行时: She reads a book about Lu Yu. 6.判断句子是否正确,并改正错误: I am knowing the answer to this question. 7.用括号中动词的正确形式填空: The bird _ (fly) over the forest right now. 8.用现在进行时描述括号的内容(有人挖坑): The boy _ (dig) a hole for the sapling. 9.选择不用于现在进行时的动词: A. run B. believe C. eat D. jump 10.连词成句: (the students / water / the saplings / now) 2. 一般现在时 vs. 现在进行时 (1)区别: 一般现在时表示习惯或客观事实;现在进行时表示正在进行的动作。 例句1:1.Trees produce oxygen. 树木产生氧气。(客观事实) 例句2:The tree is producing a sticky liquid to catch insects. 树正在分泌粘液捕捉昆虫。(当前动作) 练习题 1.选择正确的时态: She usually _ (walks/is walking) to school, but today she _ (rides/is riding) a bike. 2.翻译: 松树通常生长在寒冷地区,但这棵松树现在正在枯萎。 3.改错: The sun is rising in the east every morning. 4.用一般现在时或现在进行时填空: Look! The ladybug _ (eat) the bug on the leaf. 5.判断句子时态: “We reuse paper to save trees.” _时态 6.根据提示完成句子: (usually) Trees _ (take in) CO₂. (now) The tree _ (take in) CO₂. 7.选择正确的动词形式: I _ (prefer/am preferring) green tea to black tea. 8.用括号中动词的正确形式填空: Right now, the students _ (learn) about tree senses. 9.改错: The roots of the tree is growing towards the water. 10.翻译: 他每天喝绿茶,但今天他在尝试红茶。 3. 形容词后缀 -ful 和 -less 规则: -ful 表示“充满…的”,-less 表示“无…的”。 示例: use useful(有用的)/ useless(无用的) harm harmful(有害的)/ harmless(无害的) 例句: 1.This book is useful for learning tea culture. 这本书对学习茶文化很有用。 2.Plastic bags are harmful to the environment. 塑料袋对环境有害。 练习题 1.用 -ful 或 -less 填空: The broken pencil is _ (use). 2.选择正确的形容词: The chemical is _ (harmful/harmless) to trees. 3.翻译: 这种药草对健康有益。 4.写出下列词的形容词形式: care _ / _ 5.改错: The air in the forest is peace. 6.用括号中的词完成句子: The water is _ (colour) because it’s clean. 7.选择反义词: hopeful _ 8.根据句意填空: A _ (help) person always thinks about others. 9.翻译: 无叶的树在冬天看起来很孤独。 10.写出下列词的形容词形式: power _ / _ 4. 情态动词 should 用法:表示建议或义务,意为“应该”。 例句: We should plant more trees to protect the environment. (我们应该种更多树来保护环境。) 练习题 1.用 should 完成句子: People _ (stop) cutting down forests. 2.翻译: 你应该在纸张两面写字。 3.改错: You should to water the sapling every day. 4.根据提示写建议: (save trees) We _. 5.选择正确的情态动词: _ I reuse this paper? A. Should B. Must C. Can 6.连词成句: (we / should / products / buy / forest-friendly) 7.翻译: 为了保护树木,我们应该怎么做? 8.用 should 或 shouldn’t 填空: You _ waste paper. 9.根据情境写建议: Your friend wants to help trees. Give two suggestions. 10.改错: He shoulds plant a tree every year. 5. 一般过去时(The Simple Past Tense) 结构:动词过去式(规则动词加-ed,不规则动词需记忆) 用法:表示过去发生的动作或状态。 例句: Lu Yu wrote Cha Jing to share tea knowledge. (陆羽写了《茶经》来分享茶知识。) 练习题 1.用动词的过去式填空: People _ (use) tea as medicine before the Tang dynasty. 2.翻译: 神农偶然发现了茶。 3.改错: She discover a new type of tea last year. 4.写出下列动词的过去式: study _ grow _ 5.选择正确的过去式: The archaeologists _ (find) ancient tea in the Han dynasty tomb. A. finded B. found C. find 6.用一般过去时完成句子: Lu Yu _ (want) to share his knowledge about tea. 7.翻译: 昨晚我看了一个关于树的电视节目。 8.改错: My grandmother growed ginkgo trees when she was young. 9.根据提示写句子: (Lu Yu / write / Cha Jing) _. 10.连词成句: (Shennong / discover / tea / by accident) 6. 被动语态(Passive Voice) 结构:be动词 + 过去分词 用法:强调动作的承受者。 例句:Tea was discovered by Shennong. (茶是被神农发现的。) 练习题 1.将句子改为被动语态: People use wood to make furniture. 2.翻译: 这本书被翻译成了多种语言。 3. 用被动语态填空: The sticky liquid _ (produce) by pine trees. 4.改错: The seeds is used for cooking. 5.选择正确的被动形式: The tea culture _ (spread) across China after Lu Yu died. A. was spread B. is spread C. spread 6.根据提示写被动句: (The booklet / make / by students) 7.翻译: 许多家具是用木头制成的。 8.用括号中动词的正确形式填空: The leaves _ (drop) by trees in autumn. 9.改错: The water are polluted by humans. 10.将主动句改为被动句: Scientists are studying tree senses. 练习题答案 1. 现在进行时 1.are planting 2.错误:am wanting want 3.He is writing an article about tea culture now. 4.are 5.She is reading a book about Lu Yu. 6.错误:am knowing know 7.is flying 8.is digging 9.B. believe 10.The students are watering the saplings now. 2. 一般现在时 vs. 现在进行时 1.walks; is riding 2.Pine trees usually grow in cold areas, but this pine tree is dying now. 3.错误:is rising rises 4.is eating 5.一般现在时 6.take in; is taking in 7.prefer 8.are learning 9.错误:is are 10.He drinks green tea every day, but today he is trying black tea. 3. 形容词后缀 -ful 和 -less 1.useless 2.harmful 3.This herb is helpful to health. 4.careful / careless 5.错误:peace peaceful 6.colourless 7.hopeless 8.helpful 9.A leafless tree looks lonely in winter. 10.powerful / powerless 4. 情态动词 should 1.should stop 2.You should write on both sides of the paper. 3.错误:to water water 4.should plant more trees 5.A. Should 6.We should buy forest-friendly products. 7.What should we do to protect trees? 8.shouldn’t 9.You should plant trees and reuse paper. 10.错误:shoulds should 5. 一般过去时 1.used 2.Shennong discovered tea by accident. 3.错误:discover discovered 4.studied; grew 5.B. found 6.wanted 7.I watched a TV programme about trees last night. 8.错误:growed grew 9.Lu Yu wrote Cha Jing. 10.Shennong discovered tea by accident. 6. 被动语态 1.Wood is used to make furniture (by people). 2.This book was translated into many languages. 3.is produced 4.错误:is are 5.A. was spread 6.The booklet is made by students. 7.Much furniture is made of wood. 8.are dropped 9.错误:are is 10.Tree senses are being studied by scientists. 1 学科网(北京)股份有限公司 $$