他们打了一下午的牌。
They have been playing cards all afternoon.
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been英 /biːn/|美 /bɪn/
playing英 /ˈpleɪɪŋ/|美 /ˈpleɪɪŋ/
解释
have been playing 构成现在完成进行时，表示打牌动作持续了整个下午。
They have been playing cards all afternoon.
have been playing 构成现在完成进行时，表示打牌动作持续了整个下午。