● perfect continuous/progressive aspect 完成进行时
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
● simple aspect 一般形式
一般过去时did sth
一般现在时do sth
一般将来时will do/be going to do/shall do
● 过去将来 X continuous/perfect/perfect continuous/simple
过去将来进行时would be doing/was/were going to do
过去将来完成时would have done
过去将来完成进行时would have been doing
一般过去将来时would do