七年级英语下册句型转换有哪些常见考点？

校园之窗 2025年12月18日 15:54:12 99ANYc3cd6 1 0

七年级英语下册句型转换核心要点

句型转换通常围绕以下五种基本句型展开：

我们逐一来看。

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这是最基础的转换,核心是加否定词。

be 动词 (am, is, are, was, were)：直接在 be 动词后加 not。
- 例：He is a student. → He is not a student. (缩写：He isn't a student.)
情态动词 (can, should, would, must 等)：直接在情态动词后加 not。
- 例：I can swim. → I cannot swim. (缩写：I can't swim.)
- 例：You should finish your homework. → You should not finish your homework. (缩写：You shouldn't finish your homework.)
实义动词 (没有 be 动词和情态动词的句子)：
- 主语是第三人称单数 (he, she, it, Tom, my mother 等)：在动词前加 doesn't，动词恢复原形。
  - 例：She goes to school by bike. → She doesn't go to school by bike.
- 主语是其他人称 (I, you, we, they 等)：在动词前加 don't，动词恢复原形。
  - 例：They play basketball every day. → They don't play basketball every day.
含有 let's 的句子：let's = let us，其否定形式是 Let's not...。
- 例：Let's go home. → Let's not go home.
含有 some 的句子：在否定句中，some 通常要改为 any。
- 例：There is some milk in the bottle. → There isn't any milk in the bottle.

一般疑问句通常需要用 Yes 或 No 来回答。

be 动词 (am, is, are, was, were)：
- 将 be 动词提到句首。
- 例：They are in the library. → Are they in the library?
- 注意：I am 的疑问句是 Am I...?，回答用 Yes, you are. / No, you aren't.。
情态动词 (can, should, would, must 等)：
- 将情态动词提到句首。
- 例：He can speak English well. → Can he speak English well?
实义动词 (没有 be 动词和情态动词的句子)：
- 主语是第三人称单数：在句首加 Does，动词恢复原形。
  - 例：She likes apples. → Does she like apples?
- 主语是其他人称：在句首加 Do，动词恢复原形。
  - 例：You have a book. → Do you have a book?
含有 some 的句子：在疑问句中，some 通常要改为 any。
- 例：There are some birds in the tree. → Are there any birds in the tree?

特殊疑问句用来询问具体信息（如时间、地点、人物、原因等），不能用 Yes 或 No 回答。

核心公式：特殊疑问词 + 一般疑问句？

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第一步：确定特殊疑问词,根据问题选择合适的疑问词。
- 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，回答通常用 Because...
- How (怎样) - 问方式
- How old (多大年龄) - 问年龄
- How many (多少) - 问可数名词数量
- How much (多少钱/多少) - 问价格或不可数名词数量
- What time (几点) - 问具体时刻
第二步：把剩下的部分变成一般疑问句。
- 如果原句有 be 动词或情态动词,直接提前。
- 如果原句只有实义动词，则借助 do/does 并把动词恢复原形。
第三步：组合起来。

原句	特殊疑问词	剩余部分（变一般疑问句）	特殊疑问句
He is a teacher.	What	is he?	What is he?
They go to school by bus.	How	do they go to school?	How do they go to school?
Tom likes playing the piano.	What	does Tom like?	What does Tom like?
My birthday is in May.	When	is your birthday?	When is your birthday?
There are some books on the desk.	How many	books are there on the desk?	How many books are there on the desk?

否定疑问句通常表示惊讶、建议或责备,期待得到肯定回答。

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核心公式：Be动词/情态动词/助动词 + not + 主语 + ...?

be 动词：Be动词 + not + 主语...?
- 例：It is a nice day. → Isn't it a nice day?
情态动词：情态动词 + not + 主语...?
- 例：You can help me. → Can't you help me?
实义动词：Do/Does + not + 主语 + 动词原形...?
- 例：He knows the answer. → Doesn't he know the answer?

这种题型更灵活,考察词汇和句式的综合运用能力。

用 too 或 also 改写
- I like apples. Lily likes apples, too.
- Lily also likes apples.
用 both...and... 改写
- Lucy and Lily are both students. (Both Lucy and Lily are students.)
用 either...or... 改写
- You can go there by bus or by bike.
- You can go there either by bus or by bike.
用 neither...nor... 改写
- Tom doesn't like apples, and Jerry doesn't like apples, either.
- Neither Tom nor Jerry likes apples. (注意：neither...nor... 连接两个主语时，动词与离它最近的主语保持一致。)
用 There be 句型改写
- A cat is under the table.
- There is a cat under the table.
用 let's 改写建议
- Why don't we go to the movies?
- Let's go to the movies.
用 spend / take / cost / pay 改写花费句型
- I spent 20 yuan on this book.
- This book cost me 20 yuan.
- It took me 20 yuan to buy this book.
- I paid 20 yuan for this book.

请将下列句子按要求进行转换。

肯定句 → 否定句

例：They are playing soccer. → They aren't playing soccer.
练习：He can swim very well. → He can't swim very well.
练习：She does her homework every evening. → She doesn't do her homework every evening.

陈述句 → 一般疑问句

陈述句 → 特殊疑问句

例：She gets up at 6:30. → What time does she get up?
练习：My favorite subject is P.E. → What is your favorite subject?
练习：They are talking about the movie. → What are they talking about?
练习：There is a little milk in the glass. → How much milk is there in the glass?

肯定句 → 否定疑问句

同义句转换

例：Lucy likes dancing, and Lily likes dancing, too. → Both Lucy and Lily like dancing.
练习：He doesn't like math, and he doesn't like English, either. → Neither math nor English does he like. (或：He likes neither math nor English.)
练习：Why don't we have a picnic this weekend? → Let's have a picnic this weekend.