十六大时态 十六大时态形态常态进行态完成态完成进行态一般过去时 did一般现在时 did一般将来时 will do过去进行时was/were doing现在进行时 be doing将来进行时will be doing过去完成时 had done现在完成时have done将来完成时will have done过去完成进行时 had been doing现在完成进行时have been doing将来完成进行时will have been doing一般过去将来时 would do过去将来进行时would b