一般现在时 be,do/does 一般过去时 was/were,did 一般将来时 will,be going to 现在进行时 be doing 过去进行时 was/were doing 将来进行时 will be doing 现在完成时 have/has done 过去完成时 had done 现在完成进行时 have/has been doing 过去完成进行时 had been doing
