初一英语句型转换方法可归纳为以下五个核心类型，结合权威资料整理如下：

一、肯定句与否定句转换

肯定句变否定句

- 在be动词（am/is/are/was/were）后加not，或情态动词（can/may/must等）后加not。例如：

- She is a student. → She isn't a student.

- He can swim. → He can't swim.

- 动词需恢复原形（如第三人称单数动词由第三人称单数形式变原形）。

否定句变肯定句

- 去掉否定词not或助动词（如does/didn't），动词恢复原形。例如：

- She doesn't like ice cream. → She likes ice cream.

- He didn't go to school. → He went to school.

二、一般疑问句与否定回答转换

一般疑问句变否定回答

- 将助动词（do/does/did）变为doesn't/don't，主语后加not。例如：

- Do you like basketball？ → No, I don't.

- Does he swim？ → No, he doesn't.

一般疑问句变陈述句

- 去掉助动词或添加肯定/否定词。例如：

- Do you like basketball？ → You like basketball.

- Can she swim？ → She can swim.

三、祈使句与否定句转换

在祈使句前加don't。例如：

Don't touch the flowers. → 原句为肯定句时：She touches the flowers.

四、There be句型与否定句转换

在be动词后加not。例如：

There is a book on the table. → There isn't a book on the table.

五、主动语态与被动语态转换

主动语态转被动语态：

将be动词+动词过去分词。例如：

She reads a book. → A book is read by her.

被动语态转主动语态：调整语序并恢复动词原形。例如：

The book is read by her. → She reads the book.

六、特殊疑问句转换

将特殊疑问词提前，其余部分调整语序。例如：

What is he doing？ → He is what is doing.

七、同义句转换

用相近表达替换原句。例如：

He is a good student. → He is very intelligent.

注意事项：转换时需保持时态、语态一致，优先使用原句结构。建议通过大量练习巩固掌握。