The classroom is cleaned every day.一般現(xiàn)在時(shí)
The classroom was cleaned every day.一般過(guò)去時(shí)
The classroom will be cleaned every day.一般將來(lái)時(shí)
The classroom has been cleaned every day.現(xiàn)在完成時(shí)
The classroom had been cleaned every day.過(guò)去完成時(shí)
The classroom would be cleaned every day.過(guò)去將來(lái)時(shí)
The classroom was being cleaned every day.過(guò)去進(jìn)行時(shí)