謂語形式(以do為例)
一般現在時 do /does
一般過去時 did
一般將來時 shall/will do
過去將來時 should/would do
現在進行時 am/are/is doing
過去進行時 was/were doing
將來進行時 shall/will be doing
過去將來進行時 should/would be doing
現在完成時 has/have done
過去完成時 had done
將來完成時 shall/will have done
過去將來完成時 should/would have done
現在完成進行時 has/have been doing
過去完成進行時 had been doing
將來完成進行時 shall/will have been doing
過去將來完成進行時 should/would have been doing