in和on是两种常用的介词，它们在不同情况下有不同的用法和区别，下面我们来造几个句子看看：
1. 介词in和on的用法和区别
– In the classroom, the teacher taught us about the history of the world.
– On the bus, I saw a beautiful sunset.
– In the classroom, the teacher taught us about the history of the world.(在教室里，老师 taught us 介词in 的知识)
– On the bus, I saw a beautiful sunset.(在公交车上，我看到美丽的夕阳)
– In the classroom, the teacher taught us about the history of the world.(在教室里，老师 taught us in 介词in的知识)
– On the bus, I saw a beautiful sunset.(在公交车上，我看到美丽的夕阳)
– In the classroom, the teacher taught us about the history of the world.(在教室里，老师 taught us on 介词on 的知识)
– On the bus, I saw a beautiful sunset.(在公交车上，我看到美丽的夕阳)
2. 介词in和on的例句和用法
– She is an engineer by training, and she works on computer programs.
– The book is on the table, which is in my bag.
– She is an engineer by training, and she works on computer programs.(她是一名工程师，她从事计算机编程的工作)
– The book is on the table, which is in my bag.(书在桌子上，我的包里)
– She is an engineer by training, and she works on computer programs.(她是一名有 training 的工程师，她从事计算机编程的工作)
– The book is on the table, which is in my bag.(书在桌子上，我的包里)
3. 介词in和on的例句和用法
– I have a meeting with my manager tomorrow, and I need to be prepared for it.
– She is an engineer by training, and she works on computer programs.
– I have a meeting with my manager tomorrow, and I need to be prepared for it.(明天，我要和我经理开会议，我需要做好准备)
– She is an engineer by training, and she works on computer programs.(她是一名有 training 的工程师，她从事计算机编程的工作)
– I have a meeting with my manager tomorrow, and I need to be prepared for it.(明天，我要和我经理开会议，我需要做好准备)
– She is an engineer by training, and she works on computer programs.(她是一名有 training 的工程师，她从事计算机编程的工作)
总结起来，in 和 on 是两种常用的介词，它们有不同的用法和区别，在具体的句子中，需要根据上下文和语境来选择正确的介词。
