They may have been( thinking )about their work all day.这是做的首字母,为啥要填think的ing形式.

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Theymayhavebeen(thinking)abouttheirworkallday.这是做的首字母,为啥要填think的ing形式.Theymayhavebeen(thinking)about

They may have been( thinking )about their work all day.这是做的首字母,为啥要填think的ing形式.
They may have been( thinking )about their work all day.这是做的首字母,为啥要填think的ing形式.

They may have been( thinking )about their work all day.这是做的首字母,为啥要填think的ing形式.
have been doing 是现在完成进行时, 表示动作从过去到现在一直在进行,而且还会进行下去
They may have been( thinking )about their work all day.
他们可能已经思考了他们的工作一整天 (而且还会继续思考下去)



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have been thinking 为现在完成进行时态

这是现在完成进行时,表示的动作从过去到现在一直在进行,还会持续下去。希望我能帮助你解疑释惑。