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be动词小学英语全套复习自带口诀、对比、专项练习,每题带答案 ,易错讲解

be动词小学英语全套复习自带口诀、对比、专项练习,每题带答案 ,易错讲解
别看 be 动词就这小小的几个词,它藏在每一张英语试卷里。很多孩子到了高年级,还是会在时态、单复数这里栽跟头。
这份练习,把常踩的坑都单独拎出来,带着孩子一题一题过,弄清楚为什么选这个,而不是只记答案。把基础打牢,后面学更难的句型才不会吃力。
一、先搞懂:be 动词有谁小学重点就这三个: am  /  is  /  are 还有它们过去式(高年级必考): was ( am、is 的过去式) were ( are 的过去式)一句话:be 动词就是“是”,跟着主语走。二、速记口诀(好背,孩子记得牢)现在时口诀我用 am,你用 are;is 连着他、她、它;单数用 is,复数全用 are。
过去式口诀我、他、她、它,都用 was;你、你们、我们、他们,全部用 were;单数用 was,复数就 were。
小提醒: you  不管是“你”还是“你们”,永远配 are(现在)、were(过去),这个坑特别多孩子踩。三、重点对比1. 现在时 vs 过去时很多孩子分不清:- 现在:讲现在的样子、现在是谁She is happy. 她(现在)很开心。​- 过去:讲以前、昨天、上次She was happy yesterday. 她昨天很开心。关键词(看到就要警惕):
2. 容易混淆场景① 名词单数 / 复数The cat is black.(一只猫 → is)The cats are black.(好多猫 → are)② this / that / these / thoseThis is a pen.That is a book.These are apples.Those are oranges.③ there be(大坑!)记住:看后面第一个东西!There is a dog.(a dog → is)There are two dogs.(two dogs → are)这就是“就近原则”,考试超级爱考。四、常考易错点(单独拎出来)这几块,作业、试卷反复丢分。易错点 1:I’m,you’re,he’s 缩写
坑:很多小朋友把  it’s  和  its  搞混。-  it’s  = it is(它是)​-  its :它的(没有 be)易错点 2:一般疑问句把 be 放到句子最前面。例:She is at home.→ Is she at home?They were busy.→ Were they busy?回答也要配对:— Is he tall?— Yes, he is. / No, he isn’t.坑:回答不能随便换词,问 is,答就要用 is。易错点 3:否定句直接在 be 后面加 not。is not → isn’tare not → aren’twas not → wasn’twere not → weren’t易错点 4:特殊疑问句用 what / who / where / how 提问,be 跟着主语走。Where is my pen?Who are they?易错点 5:容易漏 be很多孩子直接写:He happy.He is happy.记住:描述“是什么、怎么样、在哪里”,常常要带上 be。
五、专项练习题题型由浅到深,包含单选、填空、改写、改错,每一题下面放答案 + 讲解,重点坑讲细一点。练习一:选词填空( am / is / are )用 am, is, are 填空。1. I ____ a student.2. You ____ my friend.3. This ____ a nice cat.4. The books ____ on the desk.5. She ____ in the classroom.6. There ____ some water in the cup.7. There ____ three trees near the house.8. We ____ busy today.答案1. am讲解:主语是 I,口诀“我用 am”,直接填 am。​2. are讲解:主语 you,不管指“你”还是“你们”,固定搭配 are,这是高频错题点。​3. is讲解:this 指代单数物品,用 is。​4. are讲解:books 是复数名词,复数全部用 are。​5. is讲解:she,属于“她”,用 is。​6. is讲解:water 是不可数名词,当作单数看待,要用 is。很多孩子看到 some 就选 are,这就是大坑!不可数名词没有复数,就算有 some,依然用 is。​7. are讲解:three trees,复数,there be 看后面名词,所以 are。​8. are讲解:we,我们,用 are。 练习二:选词填空( was / were )用 was, were 填空。1. I ____ at home yesterday.2. They ____ in the park last Sunday.3. That ____ a small house long ago.4. My parents ____ busy last night.5. The dog ____ here just now.答案1. was讲解:yesterday(昨天)是过去时间,主语 I,用 was。​2. were讲解:last Sunday,过去;they,要用 were。​3. was讲解:that 指单数,很久以前,过去时 → was。​4. were讲解:parents 两个人,复数,过去就用 were。​5. was讲解:the dog,单数,刚才(just now)属于过去,填 was。练习三:句型转换按要求改写句子。1. She is in the kitchen.(改成一般疑问句)答案:Is she in the kitchen?讲解:变一般疑问句,直接把 be 动词挪到句子最前面,剩下照抄。很多小朋友会把主语和 be 的顺序搞反。​2. They are on the table.(改成否定句)答案:They aren’t on the table.讲解:在 are 后面加上 not,可以缩写成 aren’t。​3. I was at school yesterday.(改成否定句)答案:I wasn’t at school yesterday.讲解:was + not,缩写 wasn’t。​4. The picture was on the wall.(改成一般疑问句)答案:Was the picture on the wall?讲解:过去式一样,把 be(was)放到句首。 练习四:找错题(考试超爱出)找出句子错在哪里,写出正确句子。1. You is my brother.答案:You are my brother.讲解:主语 you,必须搭配 are。这道题从四年级错到六年级,属于经典易错题。​2. There are some milk in the bottle.答案:There is some milk in the bottle.讲解:milk 不可数,看成单数,要用 is。看到 some 不要直接选 are!​3. He were at home last night.答案:He was at home last night.讲解:he,单数,过去时用 was,不能用 were。​4. I am in the park yesterday.
 答案:I was in the park yesterday.讲解:yesterday 是过去时间,不能用 am,要换成 was。时间词和时态一定要配对。练习五:情景问答选择合适的答句。1. — Where is my bag?— ____A. It’s on the chair.B. They are on the chair. 答案:A讲解:bag 是单数,回答用 it’s。如果是 bags,才选 B。2. — Were you at home yesterday?— ____A. Yes, I was.B. Yes, I am. 答案:A讲解:问句用 were(过去),回答也要用过去时,不能跳到 am。时态前后一致,这是大考点。六、综合小测试1. My new friend ____ from China.A. am B. is C. are 答案:B讲解:friend 单数,用 is。2. — How ____ your weekend?— It was great.A. is B. was C. were 答案:B讲解:答句出现 was,说明问的是已经过完的周末,用过去;your weekend 是单数,选 was。3. There ____ two oranges and one banana in the box.A. is B. are C. was答案:B讲解:there be “就近原则”,后面先看到 two oranges(复数),直接用 are。不管后面还有什么。4. — Who ____ they?— They are my cousins.A. is B. are C. was 答案:B讲解:主语 they,搭配 are。5. It ____ not a cat. It’s a dog.A. is B. am C. are答案:A讲解:it,用 is;is not = isn’t。 七、复习小建议很多家长以为 be 动词很简单,背完口诀就完事。但考试喜欢混合考:1. 先看主语:是谁、是单数还是复数;​2. 再看时间词:是现在,还是昨天、上周、很久以前;​3. 碰到 there be,看紧跟在后面那个名词;​4. 做完检查:问句、回答,时态要保持一样。如果孩子经常错,不要让他死背语法术语,多做对比练习,把 “现在 / 过去” “单数 / 复数” 放一起练,错一次就标记这个坑,隔几天再来一遍。
很多小朋友口诀背得滚瓜烂熟,一到做题就乱,主要是不会同时看主语和时间。今天这套练习专门针对这些高频错题。

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