内容正文:
2026四年级下册(北师大版三起)句型转换专项练习
一、(肯定句 → 否定句)
1. ★ My uncle is a kind man.
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2. ★★ Lucas plays football on Sports Day.
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3. ★★★ We can make a snowman in winter.
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二、(改为一般疑问句,并作肯定回答)
4. ★ Emma can play the piano.
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肯定答:________________________________
5. ★★ It is cloudy in Chengdu today.
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肯定答:________________________________
6. ★★ Liu Yi gets up at seven o'clock.
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肯定答:________________________________
7. ★★ Noah must wear a helmet when riding a bike.
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肯定答:________________________________
三、(对划线部分提问)
8. ★ Wang Jun likes his grandma.
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9. ★★ My favourite sport is basketball.
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10. ★★ I go to bed at nine o'clock.
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11. ★★★ The weather is sunny and warm in Hangzhou.
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12. ★★ I have two cousins.
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13. ★★★ Emma can draw very well.
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四、(单数句变复数句)
14. ★ This is a lovely child.
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15. ★★ That man plays the guitar.
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16. ★★ The boy flies a kite on a windy day.
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五、(改为一般疑问句,并作否定回答)
17. ★ Wang Jun loves his family.
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否定答:________________________________
18. ★★ They are playing ping-pong.
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否定答:________________________________
19. ★★ I can jump rope.
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否定答:________________________________
20. ★★ Lucas has a football.
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否定答:________________________________
21. ★★★ It is rainy in Shenyang now.
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否定答:________________________________
解析与学生常见错误提醒
1. 参考答案:My uncle is not a kind man. / My uncle isn't a kind man.
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“My uncle not is...”或“My uncle doesn't a kind man.”。
2. 参考答案:Lucas does not play football on Sports Day. / Lucas doesn't play football on Sports Day.
解析:主语是第三人称单数(Lucas),谓语是实义动词(plays),变否定句需借助助动词does,后加not,并将plays还原为play。
学生常见错误提醒:忘记将动词还原(如:Lucas doesn't plays...),或错误地只加not。
3. 参考答案:We cannot make a snowman in winter. / We can't make a snowman in winter.
解析:含有情态动词can的句子,变否定句直接在can后加not。
学生常见错误提醒:在can not后错误地加to,或写成“cann't”。
4. 参考答案:问句:Can Emma play the piano?
肯定答:Yes, she can.
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Emma是女性,回答时代词用she。
学生常见错误提醒:错误地加助动词Does(如:Does Emma can play...),或答语中情态动词不一致。
5. 参考答案:问句:Is it cloudy in Chengdu today?
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。
6. 参考答案:问句:Does Liu Yi get up at seven o'clock?
肯定答:Yes, she does.
解析:主语是第三人称单数(Liu Yi),谓语是实义动词(gets),变一般疑问句在句首加助动词Does,并将gets还原为get。主语Liu Yi是女性,回答时代词用she。
学生常见错误提醒:忘记将动词还原,或答语中动词未还原。
7. 参考答案:问句:Must Noah wear a helmet when riding a bike?
肯定答:Yes, he must.
解析:含有情态动词must的陈述句变一般疑问句,将must提前至句首。主语Noah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,或答语中情态动词不一致。
8. 参考答案:Who does Wang Jun like?
解析:对人物(grandma)提问,用疑问词Who。主语是第三人称单数,需用助动词does,并将likes还原为like。
学生常见错误提醒:用What提问,或忘记动词还原。
9. 参考答案:What is your favourite sport?
解析:对运动项目(basketball)提问,用疑问词What。句子是be动词is,疑问句中is提前。物主代词my变为your。
学生常见错误提醒:用Where提问,或忘记将my变为your。
10. 参考答案:When do you go to bed?
解析:对时间(at nine o'clock)提问,用疑问词When。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What time提问(更具体,但When也可接受),或忘记使用助动词do。
11. 参考答案:What's the weather like in Hangzhou?
解析:对天气状况(sunny and warm)提问,用固定句型What's the weather like? 或 How is the weather?
学生常见错误提醒:用How提问单个形容词(如:How is the weather? 正确,但需完整),或遗漏“the weather like”。
12. 参考答案:How many cousins do you have?
解析:对数量(two)提问,用疑问词组How many。主语I变为you,用助动词do。
学生常见错误提醒:用What提问,或忘记使用助动词do。
13. 参考答案:Who can draw very well?
解析:对人物(Emma)提问,用疑问词Who。含有情态动词can,疑问句中who作主语,can保持原位。
学生常见错误提醒:用What提问,或错误改变语序(如:Who does can draw?)。
14. 参考答案:These are lovely children.
解析:单数变复数,this → these,is → are,a lovely child → lovely children(child的复数是不规则变化children)。
学生常见错误提醒:child的复数形式写错(childs),或忘记改变指示代词。
15. 参考答案:Those men play the guitar.
解析:that → those,man → men(不规则变化),plays → play(主语复数)。
学生常见错误提醒:man的复数形式写错(mans),或忘记将动词改为play。
16. 参考答案:The boys fly kites on windy days.
解析:boy → boys,flies → fly(主语复数),a kite → kites,a windy day → windy days。
学生常见错误提醒:名词复数形式错误,或忘记将动词改为fly。
17. 参考答案:问句:Does Wang Jun love his family?
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(loves),变一般疑问句在句首加助动词Does,并将loves还原为love。
学生常见错误提醒:忘记将动词还原,或答语中动词未还原。
18. 参考答案:问句:Are they playing ping-pong?
否定答:No, they aren't.
解析:现在进行时(be + doing)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,或答语中主谓不一致。
19. 参考答案:问句:Can you jump rope?
否定答:No, I 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。注意人称转换(I → you)。
学生常见错误提醒:未进行人称转换,或答语中人称错误。
20. 参考答案:问句:Does Lucas have a football?
否定答:No, he doesn't.
解析:主语是第三人称单数(Lucas),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,或答语中动词未还原。
21. 参考答案:问句:Is it rainy in Shenyang now?
否定答:No, it isn't.
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,或答语中主谓不一致。
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