Have you ever been a teacher是现在完成时的哪个用法

Have you ever been a teacher是现在完成时的哪个用法 have ever been 的用法? Have you ever been to Hangzhou?是正确的 但是Have you ever gone to have you ever been with a Have you ever been Have you ever been to Kunming?怎么回答?是No never,/No,ever/还是No,a 现在完成时ever\never 的用法 have you ever been to的作文 现在完成时的have been have you ever been in a difficult_where you have How long have you been a teacher 英语现在完成时的宾语时态如何确定 Have you ever dreamed of ____so good a chan