They saw children( )games when they passe

题目

They saw children( )games when they passe
They saw children( )games when they passed the playground
A.plays B.to play c.playing d.

答案

【playing】
They saw children( C )games when they passed the playground
A.plays B.to play c.playing d.play
全句翻译为：他们经过操场时正看到孩子们在玩游戏.
saw是see 看见 的过去式 ； see sb doing sth是固定用法,意为“看见某人（正在）做某事”,要记住.动词-ing形式表示进行时,正在做某事的意思.
有不明白再问我.
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【来自英语牛人团】