她到的时候我已经打了一上午电话了，但一直占线。
I had been trying to call all morning when she arrived, but the line was busy.
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had英 /hæd/|美 /hæd/
been英 /biːn/|美 /bɪn/
trying英 /ˈtraɪɪŋ/|美 /ˈtraɪɪŋ/
解释
had been trying 是过去完成进行时，表示在她到达之前一直在反复尝试打电话。
I had been trying to call all morning when she arrived, but the line was busy.
had been trying 是过去完成进行时，表示在她到达之前一直在反复尝试打电话。