语法：时态大字.docx

E do C
现在(主动)
经常
E (often)do/does C.
正在
E am/is/are doing C (now).
已经
E have/has done C (since…).
一直
E have/has been doing C.
过去(主动)
E did C (yesterday).
E was/were doing C (at that time).
E had done C (by yesterday).
E had been doing C.
将来(主动)
E will do C (tomorrow).
E will be doing C.
E will have done C (by tomorrow).
E will have been doing C.
过去(被动)
C was/were done by E (yesterday).
C was/were being done by E.
C had been done by E (by yesterday).
C had been being done by E.
将来(被动)
C will be done by E (tomorrow).
C will be being done by E.
C will have been done (by tomorrow).
C will have been doing by E.
C be done
现在(被动)
经常
C (often)is/are done by E.
正在
C am/is/are being done.
已经
C have/has been done.
一直
C have/has been being done.