Unit 4（期末知识清单）英语外研版三起四年级下册（新教材）

知识清单·外研版三起四年级下册 Unit4 Plant life 知识梳理 知识点拨 【考点一】现在进行时be doing 【考点二】What 引导现在进行时特殊疑问句 【考点三】现在进行时一般疑问句及答语 【考点四】名词不规则复数 leaf → leaves 【考点五】核心实义动词用法 考点一：现在进行时be doing 例句： We are digging the earth. 我们正在挖土。 They are planting seeds. 他们正在播种。 解析： 现在进行时描述当下正在发生的动作，结构：主语 + am/is/are + 动词-ing。I 用 am，单数主语用 is，复数主语用 are。 小练习： ( ) 1. I ______ digging now. A. am B. is C. are ( ) 2. He ______ planting a sunflower. A. am B. is C. are ( ) 3. They ______ digging the earth. A. is B. are C. am ( ) 4. The plant ______ fast. A. grow B. is growing C. grows ( ) 5. We ______ seeds in the garden. A. plant B. plants C. are planting 考点二：What 引导现在进行时特殊疑问句 例句： —What are you doing? —I’m planting seeds. —你正在做什么？—我正在播种。 解析： 固定句型：What + am/is/are + 主语 + doing? 答语使用主语 + be + 动词-ing。 小练习： ( ) 1. —______ are they doing? —They are digging. A. Where B. What C. Who ( ) 2. —What ______ she doing? —She is planting seeds. A. is B. am C. are ( ) 3. What ______ you doing? A. is B. are C. am ( ) 4. —What is the girl doing? —She ______ a sunflower. A. plants B. plant C. is planting ( ) 5. What ______ the plants doing? A. are B. is C. am 考点三：现在进行时一般疑问句及答语 例句： —Are the seeds growing? —Yes, they are. / No, they aren’t. —种子在生长吗？—是的，它们在。/ 不，它们没有。 解析： 结构：Am/Is/Are + 主语 + 动词-ing? 肯定回答：Yes, 主语+be；否定回答：No, 主语+be + not。 小练习： ( ) 1. —______ you digging? —Yes, I am. A. Is B. Do C. Are ( ) 2. —Is she planting seeds? —______ A. Yes, she does. B. Yes, she is. C. No, she don’t. ( ) 3. —Are the plants growing? —______ A. No, they aren’t. B. Yes, they do. C. No, they don’t. ( ) 4. —______ the sunflower growing fast? A. Are B. Do C. Is ( ) 5. —Are they digging the earth? —______ A. Yes, they do. B. Yes, they are. C. No, they not. 考点四：名词不规则复数 leaf → leaves 例句： This is a leaf. 这是一片叶子。 These are leaves. 这些是叶子。 解析： leaf 单数，复数形式为不规则变化 leaves。 小练习： ( )1. I can see many ______. A. leaf B. leafs C. leaves ( )2. This ______ is small. A. leaf B. leaves C. leafes ( )3. The ______ of the plant are green. A. leaf B. leaves C. leafs ( )4. One ______, two ______. A. leaf; leaf B. leaf; leaves C. leaves; leaf ( )5. Look at those ______. A. leaves B. leaf C. leafes 考点五：核心实义动词用法 例句： Dig the earth. 挖土。 Plants grow with sun and water. 植物依靠阳光和水分生长。 解析： dig、plant、grow 为核心动词，祈使句、情态动词后必须使用动词原形。 小练习： ( )1. Let’s ______ seeds. A. planting B. plant C. plants ( )2. Please ______ the earth. A. dig B. digs C. digging ( )3. Plants ______ in the sun. A. grows B. growing C. grow ( )4. We can ______ sunflowers. A. plant B. plants C. planting ( )5. The seeds will ______. A. grows B. grow C. growing 写作指引 作文题目：My Favourite Plant 参考词汇 plant, seed, earth, water, sun, air, root, stem, leaf, grow, sunflower, grow fast 参考句型 1. 开篇：My favourite plant is…（介绍最喜欢的植物） 2. 操作：First, I plant…in the earth.（描写播种步骤） 3. 生长需求：Plants need sun, water and air to grow.（植物生长必备条件） 4. 生长变化：Now it is growing. It has…（描写植物生长形态） 5. 结尾：It grows fast. I love my plant.（总结+表达情感） 参考范文 My Favourite Plant My favourite plant is a sunflower. First, I plant a seed in the earth. I water it every day. Plants need sun, water and air to grow. Now it is growing. It has roots, a stem and many green leaves. It grows fast. I love my sunflower very much. 综合训练 一、选出不同类单词 ( )1. A. dig B. root C. seed ( )2. A. leaf B. sun C. stem ( )3. A. dig B. plant C. earth ( )4. A. sun B. water C. grow ( )5. A. plant B. air C. sunflower 二、中英短语配对 1. plant seeds A. 长得快 2. dig the earth B. 播种 3. grow fast C. 挖泥土 4. need water D. 提供食物和纸张 5. give us food and paper E. 需要水 三、选词填空 dig, plant, grow, leaf, earth 1. Put the seed in the ______. 2. The ______ are green. 3. We ______ seeds in spring. 4. Plants ______ with sun and water. 5. They are ______ the earth. 四、情景选择 ( )1. 询问对方正在做什么 A. What do you do? B. What are you doing? ( )2. 表达“植物需要阳光和水” A. Plants need sun and water. B. Plants have sun and water. ( )3. 询问种子是否在生长 A. Do the seeds grow? B. Are the seeds growing? ( )4. 回答“我们正在播种” A. We plant seeds. B. We are planting seeds. ( )5. 表达“植物为我们提供纸” A. Plants give us paper. B. Plants like paper. 五、连词成句 1. are, what, doing, you (?) ________________________________________________________________________ 2. are, they, seeds, planting (.) ________________________________________________________________________ 3. need, plants, sun, water, and (.) ________________________________________________________________________ 4. growing, is, the, sunflower (.) ________________________________________________________________________ 5. dig, we, earth, the (.) ________________________________________________________________________ 六、阅读理解 Hello, I’m Tom. I like plants. Now my friends and I are in the garden. We are digging the earth. Then we plant seeds. Plants need sun, water and air. They grow fast. I love plants. ( )1. Where are Tom and his friends? A. In the room. B. In the garden. ( )2. What are they doing first? A. Digging the earth. B. Planting trees. ( )3. What do plants need? A. Food. B. Sun, water and air. ( )4. Plants grow ______. A. slow B. fast ( )5. Tom likes ______. A. water B. plants 参考答案 知识点拨 小练习 考点一 现在进行时（am/is/are + 动词 - ing） 1.A 解析：主语为 I，be 动词固定用 am。 2.B 解析：主语 He 是第三人称单数，be 动词用 is。 3.B 解析：主语 They 是复数，be 动词用 are。 4.B 解析：结合语境强调正在生长，用现在进行时 is growing。 5.C 解析：表达此刻正在播种，选用现在进行时 are planting。 考点二 What 引导现在进行时特殊疑问句 1.B 解析：询问正在做的动作，用疑问词 What。 2.A 解析：主语 she 为第三人称单数，be 动词用 is。 3.B 解析：主语为 you，对应的 be 动词用 are。 4.C 解析：问句是现在进行时，答语也要使用同一种时态 is planting。 5.A 解析：主语 the plants 是复数，be 动词用 are。 考点三 现在进行时一般疑问句及答语 1.C 解析：主语是 you，一般疑问句开头用 Are。 2.B 解析：问句以 Is 引导，答语也要用 is 作答。 3.A 解析：问句以 Are 引导，否定回答用 No, they aren’t. 4.C 解析：主语 the sunflower 是单数，be 动词用 Is。 5.B 解析：问句以 Are 引导，肯定回答用 Yes, they are. 考点四 名词不规则复数 leaf → leaves 1.C 解析：many 后接可数名词复数，leaf 的复数形式为 leaves。 2.A 解析：This 后接可数名词单数，故用 leaf。 3.B 解析：be 动词为 are，主语要用复数形式 leaves。 4.B 解析：One 后接单数 leaf，two 后接复数 leaves。 5.A 解析：those 后接可数名词复数，选用 leaves。 考点五 核心实义动词用法 1.B 解析：Let’s（Let us）后接动词原形。 2.A 解析：Please 引导祈使句，后面接动词原形。 3.C 解析：主语 Plants 是复数，一般现在时谓语动词用原形。 4.A 解析：情态动词 can 之后必须使用动词原形。 5.B 解析：助动词 will 后接动词原形。 综合训练 一、选出不同类单词 1.A 解析：dig 是动词，root、seed 都是表示植物部位的名词。 2.B 解析：leaf、stem 是植物部位，sun 是自然事物。 3.C 解析：dig、plant 是动词，earth 是名词。 4.C 解析：sun、water 是名词，grow 是动词。 5.B 解析：plant、sunflower 都属于植物，air 是自然事物。 二、中英短语配对 1—B 2—C 3—A 4—E 5—D 三、选词填空 1.earth 2.leaves 3.plant 4.grow 5.digging 四、情景选择 1.B 2.A 3.B 4.B 5.A 五、连词成句 1.What are you doing? 2.They are planting seeds. 3.Plants need sun and water. 4.The sunflower is growing. 5.We dig the earth. 六、阅读理解 1.B 解析：文中提到 Now my friends and I are in the garden. 2.A 解析：原文写明 We are digging the earth. 3.B 解析：根据 Plants need sun, water and air. 可知答案。 4.B 解析：由 They grow fast. 可得出答案。 5.B 解析：文章开头 I like plants. 点明答案。 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $