have been是什麼時態什麼語態[朗讀]

have been是現在完成時。
例句：
the walls have been painted bright yellow
這些牆壁已被漆成亮黃色。
severe winds have been battering the coast
狂風一直在海岸肆虐。
擴展資料。
at times they have been shamefully neglected
有時他們被可恥地忽略了。
the marshes have been drained
沼澤地里的水已排干。
your trip must have been fun
你這次旅行一定很開心吧。