内容正文:
2026闽教版三年级下册句型转换专项练习
第一部分:分层练习
一、(肯定句 → 否定句)
1. ★ This is a big bear.
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2. ★★ I want some milk for breakfast.
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3. ★★★ The bird can swim.
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二、(改为一般疑问句,并作肯定回答)
4. ★ That is a black and white cat.
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肯定答:________________________________
5. ★★ Emma’s sweater is in the schoolbag.
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肯定答:________________________________
6. ★★ Wang Jun wants some apple juice.
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肯定答:________________________________
7. ★★ It is time to have dinner.
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肯定答:________________________________
三、(对划线部分提问)
8. ★ I wear Size S.
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9. ★★ I am reading a book.
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10. ★★ Noah’s favorite drink is water.
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11. ★★★ Wang Jun’s shirt is under the chair.
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12. ★★ I have two animal friends.
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13. ★★★ I like fish and vegetables for dinner.
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四、(将下列单数句改为复数句)
14. ★ This is a lovely rabbit.
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15. ★★ That is a tall horse.
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16. ★★ He is a good friend.
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五、(改为一般疑问句,并作否定回答)
17. ★ You have a dog.
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否定答:________________________________
18. ★★ Lucas wants some noodles.
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否定答:________________________________
19. ★★ My shoes are under the bed.
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否定答:________________________________
20. ★★ Liu Yi is doing his homework.
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否定答:________________________________
21. ★★ I like bread for breakfast.
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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 big bear. / This isn't a big bear.
解析:含有be动词“is”的肯定句变否定句,在is后面加“not”即可。
学生常见错误提醒:写成“This not is a big bear.”(语序错误)或写成“This doesn’t a big bear.”(错误使用助动词)。
2. 参考答案:I do not want any milk for breakfast. / I don't want any milk for breakfast.
解析:含有实义动词“want”的肯定句变否定句,在主语I后加“do not (don’t)”,动词want保持原形。同时,some在否定句中通常要改为any。
学生常见错误提醒:忘记将some改为any,写成“I don’t want some milk...”。
3. 参考答案:The bird cannot swim. / The bird can't swim.
解析:含有情态动词“can”的肯定句变否定句,直接在can后面加“not (can’t)”。
学生常见错误提醒:写成“The bird not can swim.” 或“The bird doesn’t can swim.”。
4. 参考答案:问句:Is that a black and white cat?
肯定答:Yes, it is.
解析:含有be动词“is”的肯定句变一般疑问句,将is提到句首。That用it指代回答。
学生常见错误提醒:写成“That is a black and white cat?” 或答语“Yes, that is.”(回答时用it)。
5. 参考答案:问句:Is Emma’s sweater in the schoolbag?
肯定答:Yes, it is.
解析:含有be动词“is”的肯定句变一般疑问句,将is提到句首。主语Emma’s sweater用it指代回答。
学生常见错误提醒:写成“Does Emma’s sweater in the schoolbag?”。
6. 参考答案:问句:Does Wang Jun want any apple juice?
肯定答:Yes, he does.
解析:主语是第三人称单数“Wang Jun”,谓语动词是“wants”,变一般疑问句需在句首加“Does”,并将wants还原为动词原形“want”。Wang Jun是男性,回答时代词用he。同时,some在疑问句中通常改为any。
学生常见错误提醒:写成“Is Wang Jun want...?” 或“Does Wang Jun wants...?” 或忘记将some改为any。
7. 参考答案:问句:Is it time to have dinner?
肯定答:Yes, it is.
解析:句型“It is time to...”变一般疑问句,将is提到句首。
学生常见错误提醒:写成“Does it time to have dinner?” 或“It is time to have dinner?”。
8. 参考答案:What size do you wear?
解析:对尺码“Size S”提问,用特殊疑问词“What size”。主语I变为you,动词wear用原形,前面加助动词do。
学生常见错误提醒:用“What”提问,写成“What do you wear?”(意为“你穿什么?”),或写成“What size you wear?”(漏助动词do)。
9. 参考答案:What are you doing?
解析:对正在进行的动作“reading a book”提问,用“What...doing?”。主语I变为you,be动词am变为are。
学生常见错误提醒:用“How”提问,或写成“What you are doing?”(语序错误)。
10. 参考答案:What is Noah’s favorite drink?
解析:对“water”(饮品类别)提问,用“What”。is提到句首。
学生常见错误提醒:用“How”提问,或写成“What Noah’s favorite drink is?”。
11. 参考答案:Where is Wang Jun’s shirt?
解析:对地点“under the chair”提问,用疑问词“Where”。is提到句首。
学生常见错误提醒:用“What”提问,或写成“Where Wang Jun’s shirt is?”。
12. 参考答案:How many animal friends do you have?
解析:对数量“two”提问,用“How many”。主语I变为you,动词have用原形,前面加助动词do。
学生常见错误提醒:用“What”提问,或写成“How many animal friends you have?”(漏助动词do)。
13. 参考答案:What do you like for dinner?
解析:对食物“fish and vegetables”提问,用“What”。主语I变为you,动词like用原形,前面加助动词do。for dinner保持不变。
学生常见错误提醒:用“How”提问,或写成“What you like for dinner?”(漏助动词do)。
14. 参考答案:These are lovely rabbits.
解析:单数变复数,This变为These,is变为are,a lovely rabbit变为lovely rabbits。
学生常见错误提醒:rabbit的复数直接加s,注意拼写。
15. 参考答案:Those are tall horses.
解析:单数变复数,That变为Those,is变为are,a tall horse变为tall horses。
学生常见错误提醒:horse的复数直接加s,注意拼写。
16. 参考答案:They are good friends.
解析:单数变复数,He变为They,is变为are,a good friend变为good friends。
学生常见错误提醒:friend的复数直接加s,注意拼写。
17. 参考答案:问句:Do you have a dog?
否定答:No, I don't.
解析:主语是“You”,谓语动词是“have”,变一般疑问句在句首加“Do”。主语You回答时用I。
学生常见错误提醒:写成“Have you a dog?” 或答语“No, you don't.”(人称错误)。
18. 参考答案:问句:Does Lucas want any noodles?
否定答:No, he doesn't.
解析:主语是第三人称单数“Lucas”,谓语动词是“wants”,变一般疑问句需在句首加“Does”,并将wants还原为动词原形“want”。Lucas是男性,回答时代词用he。同时,some在疑问句中通常改为any。
学生常见错误提醒:写成“Is Lucas want...?” 或“Does Lucas wants...?” 或忘记将some改为any。
19. 参考答案:问句:Are your shoes under the bed?
否定答:No, they aren't.
解析:含有be动词“are”的肯定句变一般疑问句,将are提到句首。主语My shoes变为your shoes,回答时用they。
学生常见错误提醒:写成“Do your shoes under the bed?” 或答语“No, they don't.”。
20. 参考答案:问句:Is Liu Yi doing his homework?
否定答:No, he isn't.
解析:现在进行时(is/am/are + doing)的肯定句变一般疑问句,将be动词(is)提到句首。Liu Yi是男性,回答时代词用he。
学生常见错误提醒:写成“Does Liu Yi doing his homework?” 或答语“No, he doesn't.”。
21. 参考答案:问句:Do you like bread for breakfast?
否定答:No, I don't.
解析:主语是“I”,谓语动词是“like”,变一般疑问句在句首加“Do”。主语I回答时用I。
学生常见错误提醒:写成“Is you like bread for breakfast?” 或答语“No, you don't.”(人称错误)。
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