1一般现在时 do/does 现在进行时be doing 现在完成时 have/has done 现在完成进行时have/has been doing
2.一般过去时 did 过去进行时 were/was doing 过去完成时 had done .过去完成进行时 had been doing
3.一般将来时will/shall do 将来进行时 will /shall be doing 将来完成时 will /shall have done 将来完成进行时will/shall have been doing
4.一般过去将来时 would/should do 过去将来进行时 would/should be doing 过去将来完成时would/should have done 过去将来完成进行时would/should have been doing