1. inform sb of sth：告诉某人某事。例如：“inform the manager of the new policy.”（向经理通报新）
2. inform sb about sth：告诉某人关于某事。例如：“inform him about the meeting time.”（告诉他会议的时间）
3. inform sb that sth has happened：告知某人某事已经发生。例如：“inform them that the meeting has been postponed.”（告诉他们会议已经被推迟了）
4. inform sb that sth will happen：告知某人某事即将发生。例如：“inform them that the exam will start soon.”（告诉他们考试即将开始）
5. inform sb that sth has occurred：告知某人某事已经发生。例如：“inform them that the accident has occurred.”（告诉他们已经发生）
6. inform sb that sth is happening：告知某人某事正在发生。例如：“inform them that a meeting is taking place.”（告诉他们一个会议正在进行）
7. inform sb that sth has finished：告知某人某事已经完成。例如：“inform them that the project has been completed.”（告诉他们项目已经完成）
8. inform sb that sth is going to happen：告知某人某事即将发生。例如：“inform them that the exam is going to start soon.”（告诉他们考试即将开始）
9. inform sb that sth has finished：告知某人某事已经完成。例如：“inform them that the project has been completed.”（告诉他们项目已经完成）
10. inform sb that sth is going to happen：告知某人某事即将发生。例如：“inform them that the exam is going to start soon.”（告诉他们考试即将开始）
通过掌握这些inform的形式，你可以更准确地传达你的意思，使你的表达更加清晰和有力。
