hadbeen是什么时态的标志

had been是现在完成进行时的标志。
had：v、 有; 持有; 占有; 由…组成; 显示出(性质、特征)。
been：v、 曾经; 曾经到过(某地)。
are的过去分词; be的过去分词。

He had been abroad many times、

他曾多次出国。

It was the third day running that the train had been late、

列车已经连续三天晚点了。

It was reported that several people had been arrested、

据报道已有数人被捕。

Many of them had been initiated into drug use at an early age、

他们中有很多人在早年就被教会了吸毒。

He now realized that it had been a bad decision on his part、

他现在意识到是他作了一个不恰当的决定。