观察下列句子，试着归纳其画线部分所包含的句型结构。

1．The money with which you were to buy dog food is gone…

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2．The room is a mess, with pizza boxes on the floor and dirty dishes in the sink．

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3．…remember the day when we left you in charge?

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4．Eric sits on his bed looking at Daniel, who has his arms crossed and looks angry．

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5．Sometimes he acts as though he doesn’t even love us at all．

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