在她举办第一场独奏会之前，她已经学了三年钢琴。
She had been studying the piano for three years before she gave her first recital.
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had英 /hæd/|美 /hæd/
been英 /biːn/|美 /bɪn/
studying英 /ˈstʌdiɪŋ/|美 /ˈstʌdiɪŋ/
解释
had been studying 是过去完成进行时，表示学钢琴这个动作在独奏会之前已经开始并持续了三年。
She had been studying the piano for three years before she gave her first recital.
had been studying 是过去完成进行时，表示学钢琴这个动作在独奏会之前已经开始并持续了三年。