have been given是什么时态

　　Many have been given little or no compensation.

　　许多人只得到一丁点补偿或者没有得到补偿。

　　I feel as though I have been given a great gift.

　　这让我有了好像得到了一份大礼的'感觉。

　　But no details have been given about the changes.

　　但没有详细说明有关的变化。