她在这家公司工作了十年，直到决定辞职。
She had been working at the company for ten years when she decided to quit.
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had英 /hæd/|美 /hæd/
been英 /biːn/|美 /bɪn/
working英 /ˈwɜːkɪŋ/|美 /ˈwərkɪŋ/
解释
过去完成进行时 "had been working" 由 had + been + 现在分词 working 构成，表示在辞职那一刻之前工作一直在进行。
She had been working at the company for ten years when she decided to quit.
过去完成进行时 "had been working" 由 had + been + 现在分词 working 构成，表示在辞职那一刻之前工作一直在进行。