一、简单句句型的转换
1. 陈述句转换为感叹句
例如：It is a beautiful flower.（那是一朵漂亮的花。）
转换为：What a beautiful flower it is!
2. 陈述句转换为疑问句
例如：You are a policeman.（你是一名警察。）
转换为：Are you a policeman?
二、并列句句型的转换
并列句是由并列连词（如：and，or，but等）连接的简单句。
1. 并列句转换为复合句
例如：I like English and he likes English, too.（我喜欢英语，他也喜欢英语。）
转换为：I like English and he does, too.
2. 并列句转换为复合句
例如：I know the answer and I will tell you.（我知道答案，我会告诉你。）
转换为：Not only I know the answer, but also I will tell you.
三、复合句句型的转换
复合句由主句和从句组成，从句由关联词引导。
1. 复合句转换为简单句
例如：When he comes back, I will tell him the news.（当他回来时，我会告诉他这个消息。）
转换为：As soon as he comes back, I will tell him.
2. 主语从句转换为复合句
例如：It is important to read English every day.（每天读英语很重要。）
转换为：What is important is to read English every day.
四、肯定句与否定句之间的转换
1. 肯定句转换为否定句
例如：I know the answer.（我知道答案。）
转换为：I don’t know the answer.
2. 否定句转换为肯定句
例如：He didn’t finish his homework.（他没有完成作业。）
转换为：He finished his homework.