内容正文:
2026新版三年级下册(人教精通版)句型转换专项练习
含详细解析及易错提醒
一、(肯定句 → 否定句)
1. ★ This is a chair.
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2. ★★ I like monkeys.
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3. ★★★ He is wearing a blue shirt.
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二、(改为一般疑问句,并作肯定回答)
4. ★ That is a blackboard.
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肯定答:________________________________
5. ★★ You are in Class Two.
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肯定答:________________________________
6. ★★★ She has a yellow dress.
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肯定答:________________________________
7. ★★ The apple is red.
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肯定答:________________________________
三、(对划线部分提问)
8. ★ I'm in Grade Three.
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9. ★★ This is my father.
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10. ★★ The book is on the desk.
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11. ★★★ I like tigers.
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12. ★★★ Emma is a good student.
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13. ★★ My cap is green.
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四、(单数句变复数句)
14. ★ This is a window.
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15. ★★ That is a big lion.
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16. ★★★ The child is washing his socks.
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五、(改为一般疑问句,并作否定回答)
17. ★ Wang Jun likes pandas.
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否定答:________________________________
18. ★★ They are desks.
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否定答:________________________________
19. ★★★ Liu Yi can clean the door.
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否定答:________________________________
20. ★★ Noah has a new T-shirt.
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否定答:________________________________
21. ★★★ Lucas is playing with a dog.
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否定答:________________________________
解析与学生常见错误提醒
1. 参考答案:This is not a chair. / This isn't a chair.
解析:含有be动词(is)的句子,变否定句直接在be动词后加not。
学生常见错误提醒:错误地写成“This not is a chair.”(语序错误)或“This don't a chair.”(误用助动词)。
2. 参考答案:I do not like monkeys. / I don't like monkeys.
解析:主语是第一人称(I),谓语是实义动词(like),变否定句需借助助动词do,后加not。
学生常见错误提醒:错误地写成“I like not monkeys.”(语序错误)或“I doesn't like monkeys.”(助动词误用)。
3. 参考答案:He is not wearing a blue shirt. / He isn't wearing a blue shirt.
解析:现在进行时(be + doing)的否定式,在be动词(is)后直接加not。
学生常见错误提醒:错误地写成“He not is wearing...”或“He doesn't wearing...”。
4. 参考答案:问句:Is that a blackboard?
肯定答:Yes, it is.
解析:含有be动词(is)的陈述句变一般疑问句,将be动词(is)提前至句首。
学生常见错误提醒:忘记将be动词提前,或答语不简练(如“Yes, that is.”)。
5. 参考答案:问句:Are you in Class Two?
肯定答:Yes, I am.
解析:含有be动词(are)的陈述句变一般疑问句,将be动词(are)提前至句首。主语是you,回答用I。
学生常见错误提醒:答语中用“Yes, you are.”(逻辑错误)。
6. 参考答案:问句:Does she have a yellow dress?
肯定答:Yes, she does.
解析:主语是第三人称单数(she),谓语是实义动词(has),变一般疑问句在句首加助动词Does,并将has还原为have。
学生常见错误提醒:忘记将动词还原(如:Does she has a yellow dress?),或答语中动词未还原(如:Yes, she has.)。
7. 参考答案:问句:Is the apple red?
肯定答:Yes, it is.
解析:含有be动词(is)的陈述句变一般疑问句,将be动词(is)提前至句首。主语the apple用it指代。
学生常见错误提醒:忘记将be动词提前(如:The apple is red?),或答语中主谓不一致(如:Yes, the apple is. 不简练)。
8. 参考答案:What grade are you in?
解析:对年级(Grade Three)提问,用疑问词组What grade。句子是be动词are,疑问句中are提前。
学生常见错误提醒:用Which提问,或将be动词遗漏(如:What grade you are in?)。
9. 参考答案:Who is this?
解析:对人物(my father)提问,用疑问词Who。句子是be动词is,疑问句中is提前。
学生常见错误提醒:用What提问,或将be动词遗漏(如:Who this is?)。
10. 参考答案:Where is the book?
解析:对地点(on the desk)提问,用疑问词Where。句子是be动词is,疑问句中is提前。
学生常见错误提醒:用What提问,或将be动词遗漏(如:Where the book is?)。
11. 参考答案:What do you like?
解析:对动物(tigers)提问,用疑问词What。主语是I,疑问句中变为you,时态是一般现在时,用助动词do。
学生常见错误提醒:用Which提问,或忘记使用助动词do,或未将I变为you(如:What you like?)。
12. 参考答案:Who is a good student?
解析:对人物(Emma)提问,用疑问词Who。句子是be动词is,疑问句中is提前。
学生常见错误提醒:用What提问,或将be动词遗漏(如:Who a good student is?)。
13. 参考答案:What colour is your cap?
解析:对颜色(green)提问,用疑问词组What colour。句子是be动词is,疑问句中is提前。
学生常见错误提醒:用What提问,或将be动词遗漏(如:What colour your cap is?)。
14. 参考答案:These are windows.
解析:This is a window. 改为复数句,指示代词this变为these,be动词is变为are,不定冠词a去掉,名词window加s。
学生常见错误提醒:忘记改变指示代词和be动词,或名词复数形式错误(如:windowses),或错误地改变形容词形式。
15. 参考答案:Those are big lions.
解析:That is a big lion. 改为复数句,指示代词that变为those,be动词is变为are,不定冠词a去掉,名词lion加s,形容词big保持不变。
学生常见错误提醒:忘记改变指示代词和be动词,或名词复数形式错误。
16. 参考答案:The children are washing their socks.
解析:The child is washing his socks. 改为复数句,名词child变为children(不规则变化),be动词is变为are,代词his变为their,名词socks本身已是复数,保持不变。
学生常见错误提醒:名词复数形式错误(如:childs),或忘记将be动词改为are,或代词未相应改变。
17. 参考答案:问句:Does Wang Jun like pandas?
否定答:No, he doesn't.
解析:主语是第三人称单数(Wang Jun),谓语是实义动词(likes),变一般疑问句在句首加助动词Does,并将likes还原为like。
学生常见错误提醒:忘记将动词likes还原为原形like(如:Does Wang Jun likes pandas?),或答语中动词未还原(如:No, he likes.)。
18. 参考答案:问句:Are they desks?
否定答:No, they aren't.
解析:含有be动词(are)的陈述句变一般疑问句,将be动词(are)提前至句首。
学生常见错误提醒:忘记将be动词提前(如:They are desks?),或答语中主谓不一致(如:No, they are. 不简练)。
19. 参考答案:问句:Can Liu Yi clean the door?
否定答:No, he can't.
解析:含有情态动词can的陈述句变一般疑问句,将can提前至句首。主语Liu Yi是男性,回答时代词用he。
学生常见错误提醒:错误地加助动词Do/Does(如:Does Liu Yi can clean the door?)。
20. 参考答案:问句:Does Noah have a new T-shirt?
否定答:No, he doesn't.
解析:主语是第三人称单数(Noah),谓语是实义动词(has),变一般疑问句在句首加助动词Does,并将has还原为have。
学生常见错误提醒:忘记将动词has还原为原形have(如:Does Noah has a new T-shirt?),或答语中动词未还原(如:No, he has.)。
21. 参考答案:问句:Is Lucas playing with a dog?
否定答:No, he isn't.
解析:现在进行时(be + doing)的陈述句变一般疑问句,将be动词(is)提前至句首。主语Lucas是男性,回答时代词用he。
学生常见错误提醒:忘记将be动词提前(如:Lucas is playing with a dog?),或答语中主谓不一致(如:No, Lucas isn't. 不简练)。
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