七年级英语句型转换题怎么做？

七年级英语句型转换核心要点

句型转换通常围绕以下几个核心句型展开：

1. 肯定句 ↔ 否定句
2. 陈述句 ↔ 一般疑问句
3. 陈述句 ↔ 特殊疑问句
4. 肯定句 ↔ 否定疑问句
5. 同义句转换

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第一部分：肯定句 ↔ 否定句

这是最基础的转换,主要是在肯定句中加入否定词。

含有 be 动词的句子

• 规则：在 be 动词后直接加上 not。

• be 动词：am, is, are, was, were

• 缩写形式：

  • am not → aren't (注意：I am not 的缩写是 I'm not，aren't 通常用于 You/We/They are not)
  • is not → isn't
  • are not → aren't
  • was not → wasn't
  • were not → weren't

• 例题：

  
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  • 肯定句：She is a student.
  • 否定句：She isn't a student.
  • 肯定句：They were at home yesterday.
  • 否定句：They weren't at home yesterday.

含有情态动词 的句子

• 规则：在情态动词后直接加上 not。

• 常见情态动词：can, must, should, may, could, would, will

• 缩写形式：

  • can not → can't
  • must not → mustn't (语气非常强烈，表示“禁止”)
  • should not → shouldn't
  • will not → won't
  • would not → wouldn't

• 例题：

  
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  • 肯定句：You can speak English.
  • 否定句：You can't speak English.
  • 肯定句：He must finish his homework.
  • 否定句：He mustn't finish his homework. (他绝对不可以完成作业)

含有实义动词 的句子

• 规则：根据主语的人称和时态，借助助动词 do / does / did，然后加上 not,动词要恢复原形。

• 缩写形式：

  • do not → don't
  • does not → doesn't
  • did not → didn't

• 例题：

  • 肯定句：I like apples. (主语是 I，用 do)
  • 否定句：I don't like apples.
  • 肯定句：He goes to school by bus. (主语是 He，用 does)
  • 否定句：He doesn't go to school by bus. (注意：go 恢复为原形)
  • 肯定句：They watched TV last night. (时态是一般过去时，用 did)
  • 否定句：They didn't watch TV last night. (注意：watched 恢复为原形 watch)

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第二部分：陈述句 ↔ 一般疑问句

一般疑问句通常需要用 Yes 或 No 来回答。

含有 be 动词的句子

• 规则：将 be 动词提到句首，句尾用问号 。
• 例题：
  • 陈述句：The book is on the desk.
  • 一般疑问句：Is the book on the desk?
  • 肯定回答：Yes, it is.
  • 否定回答：No, it isn't.

含有情态动词 的句子

• 规则：将情态动词提到句首，句尾用问号 。
• 例题：
  • 陈述句：She can swim.
  • 一般疑问句：Can she swim?
  • 肯定回答：Yes, she can.
  • 否定回答：No, she can't.

含有实义动词 的句子

• 规则：根据主语的人称和时态，借助助动词 Do / Does / Did 提到句首，句尾用问号 ,动词要恢复原形。
• 例题：
  • 陈述句：They play football every day. (主语是 They，用 Do)
  • 一般疑问句：Do they play football every day?
  • 肯定回答：Yes, they do.
  • 否定回答：No, they don't.
  • 陈述句：Tom gets up at 6:00. (主语是 Tom，用 Does)
  • 一般疑问句：Does Tom get up at 6:00?
  • 肯定回答：Yes, he does.
  • 否定回答：No, he doesn't.
  • 陈述句：She did her homework last night. (时态是一般过去时，用 Did)
  • 一般疑问句：Did she do her homework last night?
  • 肯定回答：Yes, she did.
  • 否定回答：No, she didn't.

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第三部分：陈述句 ↔ 特殊疑问句

特殊疑问句用来询问特定信息，如“谁”、“什么”、“何时”、“哪里”等。

• 规则：特殊疑问词 + 一般疑问句

• 步骤：

  1. 确定句子中的划线部分,选择合适的特殊疑问词。
  2. 将剩下的部分变成一般疑问句的语序（即 be/情态动词/助动词提前）。
  3. 划线部分用特殊疑问词代替。

• 常见特殊疑问词：

  • Who (谁) - 问人
  • What (什么) - 问事物、职业
  • Where (哪里) - 问地点
  • When (什么时候) - 问时间
  • Why (为什么) - 问原因
  • How (怎么样) - 问方式、状况
  • How old (多大年纪) - 问年龄
  • How many (多少) - 问可数名词数量
  • How much (多少) - 问不可数名词数量或价格

• 例题：

  • 陈述句：My father is a doctor.
    • 划线部分：a doctor (职业)
    • 特殊疑问词：What
    • 转换：What is your father? (注意：My 变成了 your)
  • 陈述句：They go to the park on Sundays.
    • 划线部分：on Sundays (时间)
    • 特殊疑问词：When
    • 转换：When do they go to the park? (注意：go 恢复为原形)
  • 陈述句：Lily bought a new book yesterday.
    • 划线部分：a new book (物)
    • 特殊疑问词：What
    • 转换：What did Lily buy yesterday? (注意：bought 恢复为原形 buy)

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第四部分：肯定句 ↔ 否定疑问句

否定疑问句通常表示惊讶、建议或责备,期待得到肯定的回答。

• 规则：在一般疑问句的基础上,将肯定形式变为否定形式。
• 例题：
  • 肯定句：You are tired, aren't you?
  • 否定疑问句：Aren't you tired?
  • 肯定句：He can swim, can't he?
  • 否定疑问句：Can't he swim?
  • 肯定句：They like music, don't they?
  • 否定疑问句：Don't they like music?

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第五部分：同义句转换

要求用不同的句式表达相同的意思,考察词汇和句型的综合运用能力。

• 常见转换方式：
  1. 主谓一致转换：
     • I have a pen. = I've got a pen.
     • Tom doesn't like apples. = Tom likes apples, does he? (反意疑问句)
  2. 近义词/短语替换：
     • He is very tall. = He is quite tall. (very ↔ quite)
     • Let's go to the cinema. = How about going to the cinema? (Let's ↔ How about)
  3. 句式结构转换：
     • She is too young to go to school. = She is so young that she can't go to school.
     • I spent 100 yuan on this book. = This book cost me 100 yuan. (spend...on... ↔ cost sb. money)

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综合练习题

句型转换，每空一词。

1. Tom is from England. (改为否定句) Tom __ __ from England.

2. They can play the piano. (改为一般疑问句并作否定回答) __ they __ the piano? No, __ __.

3. She did her homework last night. (改为一般疑问句) __ she __ her homework last night?

4. The blue pen is Lily's. (对划线部分提问) __ __ is Lily's?

5. He goes to work by bike. (对划线部分提问) __ __ he go to work?

6. We need some help. (改为否定句) We __ __ some help.

7. Your sister is a student, isn't she? (改为否定疑问句) __ your sister a student?

8. I have a new bike. (改为同义句) I __ __ a new bike.

按要求完成句子。

9. The children are playing games in the park. (对划线部分提问) __ are the children __ in the park?

10. She often helps her mother with housework. (改为一般疑问句) __ she often __ her mother with housework?

11. My father read a newspaper this morning. (改为否定句) My father __ __ a newspaper this morning.

12. It's a fine day today. (对划线部分提问) __ __ the weather today?

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练习题答案

1. isn't
2. Can, play, they can't
3. Did, do
4. What, pen
5. How, does
6. don't, need
7. Isn't
8. have got

9. What, doing 10. Does, help 11. didn't, read 12. How is