1一般現(xiàn)在時(shí) do/does 現(xiàn)在進(jìn)行時(shí)be doing 現(xiàn)在完成時(shí) have/has done 現(xiàn)在完成進(jìn)行時(shí)have/has been doing
2.一般過去時(shí) did 過去進(jìn)行時(shí) were/was doing 過去完成時(shí) had done .過去完成進(jìn)行時(shí) had been doing
3.一般將來時(shí)will/shall do 將來進(jìn)行時(shí) will /shall be doing 將來完成時(shí) will /shall have done 將來完成進(jìn)行時(shí)will/shall have been doing
4.一般過去將來時(shí) would/should do 過去將來進(jìn)行時(shí) would/should be doing 過去將來完成時(shí)would/should have done 過去將來完成進(jìn)行時(shí)would/should have been doing