七年级句型转换怎么学？

第一部分：基础句型转换 (肯定句 ↔ 否定句 / 一般疑问句)

这类转换主要涉及 be 动词、情态动词、实义动词的肯定与否定形式。

be 动句 (am, is, are, was, were)

公式：

• 变否定句： be 动词 + not
• 变一般疑问句： Be 动词 + 主语 + ... ?

例题 1：

• 原句： I am a student. (我是一名学生。)
• 变否定句： I am not a student.
• 变一般疑问句： Are you a student? Yes, I am. / No, I'm not.

例题 2：

• 原句： They are playing basketball. (他们正在打篮球。)
• 变否定句： They are not playing basketball.
• 变一般疑问句： Are they playing basketball? Yes, they are. / No, they aren't.

例题 3：

• 原句： He was at home yesterday. (他昨天在家。)
• 变否定句： He was not at home yesterday.
• 变一般疑问句： Was he at home yesterday? Yes, he was. / No, he wasn't.

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情态动词句 (can, may, must, should, could, would...)

公式：

• 变否定句： 情态动词 + not
• 变一般疑问句： 情态动词 + 主语 + ... ?

例题 1：

• 原句： She can swim. (她会游泳。)
• 变否定句： She can't (cannot) swim.
• 变一般疑问句： Can she swim? Yes, she can. / No, she can't.

例题 2：

• 原句： You must finish your homework. (你必须完成作业。)
• 变否定句： You mustn't (must not) finish your homework.
• 变一般疑问句： Must you finish your homework? Yes, I must. / No, I needn't./No, I don't have to. (注意：must 的否定回答比较特殊)

例题 3：

• 原句： They should go to bed early. (他们应该早点睡觉。)
• 变否定句： They shouldn't (should not) go to bed early.
• 变一般疑问句： Should they go to bed early? Yes, they should. / No, they shouldn't.

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实义动词句 (一般现在时、一般过去时等)

公式 (一般现在时)：

• 变否定句： 主语 + don't/doesn't + 动词原形 + ...
• 变一般疑问句： Do/Does + 主语 + 动词原形 + ... ?

公式 (一般过去时)：

• 变否定句： 主语 + didn't + 动词原形 + ...
• 变一般疑问句： Did + 主语 + 动词原形 + ... ?

例题 1 (一般现在时)：

• 原句： I like apples. (我喜欢苹果。)
• 变否定句： I don't like apples.
• 变一般疑问句： Do you like apples? Yes, I do. / No, I don't.

例题 2 (一般现在时 - 第三人称单数)：

• 原句： Tom goes to school by bus. (汤姆乘公交车去上学。)
• 变否定句： Tom doesn't go to school by bus.
• 变一般疑问句： Does Tom go to school by bus? Yes, he does. / No, he doesn't.

例题 3 (一般过去时)：

• 原句： They watched a movie last night. (他们昨晚看了一场电影。)
• 变否定句： They didn't watch a movie last night.
• 变一般疑问句： Did they watch a movie last night? Yes, they did. / No, they didn't.

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第二部分：特殊疑问句 (对画线部分提问)

这是七年级的重点和难点,基本步骤是：

1. 确定疑问词 (根据画线部分内容)。
2. 找到 be 动词/情态动词/助动词 (do/does/did)。
3. 划掉原句中的画线部分。
4. 将剩下的部分变成一般疑问句的语序。

常见疑问词对应画线部分：

• Who (谁 - 人)
• What (什么 - 事/物)
• Where (哪里 - 地点)
• When (什么时候 - 时间)
• Why (为什么 - 原因)
• How (怎么样 - 方式)
• How old (多大年龄)
• How many (多少 - 可数名词复数)
• How much (多少 - 不可数名词 / 价格)
• Whose (谁的 - 物主代词)

例题 1 (对主语提问)：

• 原句： My sister is a doctor. (画线部分：My sister)
• 分析： My sister 是主语，所以直接用 Who 提问，后面的部分保持陈述句语序。
• 疑问句： Who is a doctor?

例题 2 (对表语提问)：

• 原句： His name is Jack. (画线部分：Jack)
• 分析： Jack 是表语，用 What 提问，be 动词提前。
• 疑问句： What is his name?

例题 3 (对地点状语提问)：

• 原句： They are playing games in the park. (画线部分：in the park)
• 分析： in the park 是地点状语，用 Where 提问，be 动词提前。
• 疑问句： Where are they playing games?

例题 4 (对时间状语提问)：

• 原句： He gets up at 6:00 every morning. (画线部分：at 6:00 every morning)
• 分析： at 6:00 every morning 是时间状语，用 When 提问，因为主语是 He，所以用 does。
• 疑问句： When does he get up?

例题 5 (对原因状语提问)：

• 原句： He is late because he missed the bus. (画线部分：because he missed the bus)
• 分析： because 引导的是原因，用 Why 提问，去掉 because 后，剩下的部分变成一般疑问句。
• 疑问句： Why is he late?

例题 6 (对方式提问)：

• 原句： She goes to school by bike. (画线部分：by bike)
• 分析： by bike 是方式，用 How 提问。
• 疑问句： How does she go to school?

例题 7 (对数量提问)：

• 原句： There are five books on the desk. (画线部分：five books)
• 分析： five books 是可数名词复数，用 How many 提问，There be 句型特殊，用 are there。
• 疑问句： How many books are there on the desk?

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第三部分：综合句型转换

同义句转换

例题 1：

• 原句： I have a new bike. = I have got a new bike. (have = have got)
• 原句： Let's go to the cinema. = Shall we go to the cinema? (Let's... = Shall we...?)

例题 2：

• 原句： It's time for lunch. = It's time to have lunch. (It's time for sth. = It's time to do sth.)
• 原句： He is too young to go to school. = He is not old enough to go to school. (too...to... = not...enough to...)

例题 3：

• 原句： I spent two hours doing my homework. = It took me two hours to do my homework. (Sb. spend time (in) doing sth. = It takes sb. time to do sth.)
• 原句： How do you like the book? = What do you think of the book? (How do you like...? = What do you think of...?)

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句型转换 (变复数、变感叹句等)

例题 1 (变复数)：

• 原句： This is a dictionary. (这是一本字典。)
• 变复数： These are dictionaries.

例题 2 (变感叹句)：

• 原句： The dog is cute. (这只狗很可爱。)
• 方法： What + a/an + 形容词 + 名词 + 主语 + 谓语！ / How + 形容词/副词 + 主语 + 谓语！
• 变感叹句： What a cute dog it is! / How cute the dog is!

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综合练习题及答案

句型转换 按要求完成下列句子，每空一词。

1. They are cleaning the classroom. (改为否定句) They ____ ____ cleaning the classroom. 答案： aren't / are not

2. Tom can play the guitar. (改为一般疑问句并作否定回答) ____ Tom play the guitar? No, he ____. 答案： Can / can't

3. She did her homework last night. (改为一般疑问句) ____ she ____ her homework last night? 答案： Did / do

4. The cat is under the table. (对画线部分提问) ____ is the cat? 答案： Where

5. My favorite subject is P.E. (对画线部分提问) ____ is your favorite subject? 答案： What

6. There are some birds in the tree. (改为一般疑问句) ____ there ____ birds in the tree? 答案： Are / any

7. He goes to work by subway. (对画线部分提问) ____ does he go to work? 答案： How

8. They are playing football because it's sunny. (对画线部分提问) ____ are they playing football? 答案： Why

同义句转换 根据要求改写句子，每空一词。

1. Lucy likes reading books. (改为同义句) Lucy ____ ____ reading books. 答案： enjoys

2. It's time for class. (改为同义句) It's time ____ ____ class. 答案： to have

3. How do you like the movie? (改为同义句) What ____ you ____ ____ the movie? 答案： do / think / of

4. This is an interesting story. (改为感叹句) ____ ____ interesting story this is! 答案： What an

希望这份详细的总结和练习对您有帮助！学习句型转换的关键在于理解每种句型的结构和规律，然后多加练习，就能熟练掌握了。