有八种时态：
1.一般现在speak:please speak English
2.一般过去spoke:she spoke a lot during the party last night.
3.现在进行时：is/are+speaking:I'm totally absent in mind while she is speaking.
4.过去进行时：was/were+speaking:I was totally absent in mind while she was speaking.
5.一般将来时：will speak:It is said that Professor Li will speak during the meeting tomorrow.
6.过去完成时：had spoken
7.现在完成时：have spoken
8.过去将来时：would/could/might+speak被动语态：be动词+spoken
