在办公室里连续工作了十二个小时后，她终于关上电脑回家了。
After she had been working for twelve hours straight at the office, she finally turned off her computer and went home.
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After英 /ˈɑːftə/|美 /ˈæftər/
had英 /hæd/|美 /hæd/
been英 /biːn/|美 /bɪn/
working英 /ˈwɜːkɪŋ/|美 /ˈwərkɪŋ/
解释
时间连词 After 后接过去完成进行时 had been working，强调一整天持续的工作状态作为关电脑回家这一主句事件的背景前提。
After she had been working for twelve hours straight at the office, she finally turned off her computer and went home.
时间连词 After 后接过去完成进行时 had been working，强调一整天持续的工作状态作为关电脑回家这一主句事件的背景前提。