内容正文:
粤教沪外教版三年级下册句型转换期末专项练习
第一部分:分层练习
一、(肯定句 → 否定句)
1. ★ This is my head.
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2. ★★ I like apples.
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3. ★★ You can run fast.
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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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5. ★★ These are your eyes.
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6. ★★ You have a pet dog.
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7. ★★ Emma likes noodles.
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三、(对划线部分提问)
8. ★ My favourite food is eggs.
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9. ★★ The cat is on the desk.
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10. ★★ I have two hands.
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11. ★★ Noah is in the classroom.
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12. ★★ I can sing a song.
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13. ★★ The rabbit is white and cute.
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四、(单数句变复数句)
14. ★ I am a pupil.
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15. ★★ This is a big tiger.
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16. ★★ That is my foot.
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五、(改为一般疑问句,并作否定回答)
17. ★ It is a long arm.
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18. ★★ You may use my pen.
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19. ★★ There is a window in the classroom.
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20. ★★ Wang Jun can jump high.
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21. ★★ She has a small nose.
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解析与学生常见错误提醒
1. 参考答案:This is not my head. / This isn’t my head.
解析:含有 be 动词`is`的肯定句变否定句,直接在`is`后面加`not`。`is not`可缩写为`isn’t`。
学生常见错误提醒:写成“This not is my head.” (语序错误)。
2. 参考答案:I do not like apples. / I don’t like apples.
解析:含有实义动词`like`的肯定句变否定句,主语是`I`,需借助助动词`do`,在其后加`not`。`do not`可缩写为`don’t`。
学生常见错误提醒:写成“I not like apples.” (缺少助动词) 或 “I doesn’t like apples.” (助动词用错)。
3. 参考答案:You cannot run fast. / You can’t run fast.
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`。`cannot`必须写成一个单词,或缩写为`can’t`。
学生常见错误提醒:写成“You not can run fast.” (语序错误) 或 “You don’t can run fast.” (误用助动词`don’t`)。
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`的肯定句变一般疑问句,将`is`提到主语`that`前面。回答时主语`that`用`it`代替。
学生常见错误提醒:写成“That is a blackboard?” (语序未变) 或 “Does that a blackboard?” (误用助动词`does`)。
5. 参考答案:问句:Are these your eyes? 肯定答:Yes, they are.
解析:含有 be 动词`are`的肯定句变一般疑问句,将`are`提到主语`these`前面。回答时主语`these`用`they`代替。
学生常见错误提醒:写成“These are your eyes?” (语序未变) 或 “Do these your eyes?” (误用助动词`do`)。
6. 参考答案:问句:Do you have a pet dog? 肯定答:Yes, I do.
解析:含有实义动词`have`的肯定句变一般疑问句,主语是`you`,需借助助动词`Do`放在句首。回答时主语`you`用`I`。
学生常见错误提醒:写成“Have you a pet dog?” (不符合实义动词变疑问句规则) 或 “Are you have a pet dog?” (误用`are`)。
7. 参考答案:问句:Does Emma like noodles? 肯定答:Yes, she does.
解析:含有实义动词`likes`(第三人称单数形式)的肯定句变一般疑问句,需借助助动词`Does`,并将`likes`恢复为原形`like`。`Emma`是女孩名,回答用`she`。
学生常见错误提醒:写成“Is Emma like noodles?” (误用`is`) 或 “Do Emma like noodles?” (主语是第三人称单数,不能用`Do`)。
8. 参考答案:What is your favourite food?
解析:对事物`eggs`提问,用疑问词`What`。`My`变成`your`。`is`保持不变。
学生常见错误提醒:写成“What are your favourite food?” (主谓不一致,`food`是不可数名词) 或 “What your favourite food is?” (语序错误)。
9. 参考答案:Where is the cat?
解析:对地点`on the desk`提问,用疑问词`Where`。`is`提到主语`the cat`前。
学生常见错误提醒:写成“What is the cat?” (疑问词用错) 或 “Where the cat is?” (语序错误)。
10. 参考答案:How many hands do you have?
解析:对可数名词的数量`two`提问,用`How many`。句子谓语动词是`have`,主语`I`在问句中变成`you`,需借助助动词`do`提问。
学生常见错误提醒:写成“How many hand do you have?” (`hand`应为复数`hands`) 或 “How much hands do you have?” (`hands`是可数名词,不能用`how much`)。
11. 参考答案:Who is in the classroom?
解析:对人`Noah`提问,用疑问词`Who`。`Who`作主语,`is`保持不变。
学生常见错误提醒:写成“What is in the classroom?” (疑问词用错) 或 “Who are in the classroom?” (`Who`作主语时,be动词用单数`is`)。
12. 参考答案:What can you do?
解析:对活动`sing a song`提问,用疑问词`What`。含有情态动词`can`的句子变疑问句,将`can`提到主语`I`(变`you`)前面。
学生常见错误提醒:写成“What you can do?” (语序错误) 或 “Can you what do?” (结构混乱)。
13. 参考答案:What is the rabbit like?
解析:对特征`white and cute`提问,用句型`What is ... like?` 询问外观或特性。
学生常见错误提醒:写成“How is the rabbit?” (更常问身体状况或感受) 或 “What the rabbit is like?” (语序错误)。
14. 参考答案:We are pupils.
解析:单数变复数,`I`变`We`,`am`变`are`,`a pupil`变`pupils`。
学生常见错误提醒:写成“We is pupils.” (be动词用错) 或 “I are pupils.” (主语未变)。
15. 参考答案:These are big tigers.
解析:单数变复数,`This`变`These`,`is`变`are`,`a big tiger`变`big tigers`。
学生常见错误提醒:写成“This are big tigers.” (主谓不一致) 或 “These is big tigers.” (主谓不一致)。
16. 参考答案:Those are my feet.
解析:单数变复数,`That`变`Those`,`is`变`are`,`my foot`变`my feet` (不规则变化)。
学生常见错误提醒:写成“That are my feet.” (主谓不一致) 或 “Those is my feet.” (主谓不一致)。
17. 参考答案:问句:Is it a long arm? 否定答:No, it isn’t.
解析:含有 be 动词`is`的肯定句变一般疑问句,将`is`提到主语`it`前面。回答时用`it`。
学生常见错误提醒:写成“It is a long arm?” (语序未变) 或 “Does it a long arm?” (误用助动词)。
18. 参考答案:问句:May I use your pen? 否定答:No, you may not. / No, you can’t.
解析:含有情态动词`may`的肯定句变一般疑问句,将`may`提到主语`I`(变`you`)前面。否定回答可以说`No, you may not.`或`No, you can’t.`
学生常见错误提醒:写成“Do you may use my pen?” (情态动词`may`前无需助动词) 或 “May you use my pen?” (主语未转换)。
19. 参考答案:问句:Is there a window in the classroom? 否定答:No, there isn’t.
解析:`There be`句型的肯定句变一般疑问句,将`is`提到`there`前面。
学生常见错误提醒:写成“There is a window in the classroom?” (语序未变) 或 “Are there a window in the classroom?” (主谓不一致)。
20. 参考答案:问句:Can Wang Jun jump high? 否定答:No, he can’t.
解析:含有情态动词`can`的肯定句变一般疑问句,将`can`提到主语`Wang Jun`前面。`Wang Jun`是男孩名,回答用`he`。
学生常见错误提醒:写成“Does Wang Jun can jump high?” (情态动词`can`前无需助动词) 或 “Can Wang Jun jumps high?” (`can`后动词未用原形)。
21. 参考答案:问句:Does she have a small nose? 否定答:No, she doesn’t.
解析:含有实义动词`has`(第三人称单数形式)的肯定句变一般疑问句,需借助助动词`Does`,并将`has`恢复为原形`have`。主语`She`回答用`she`。
学生常见错误提醒:写成“Has she a small nose?” (不符合实义动词变疑问句规则) 或 “Is she have a small nose?” (时态和助动词混乱)。
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