They saw many birds( ) in the tree Asing B sings C singing D
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They saw many birds( ) in the tree Asing B sings C singing Dsang
C singing
注解:他们看见很多鸟在数上唱歌.
是"鸟"在唱歌,用现在分词短语作宾语补语,表示鸟正在唱歌.
再问: saw不是过去式为什么要选singing
再答: 这一用法与see 的时态没有关系,只要是看见某人正在做谋事, 就选择doing sth 做宾语补足语. 其基本用法是:see sb doing sth. 看见某人正在做谋事. 所以虽然 see是过去时态,但是仍然要选择 singing . 在你给出的句子中的doing就是singing
注解:他们看见很多鸟在数上唱歌.
是"鸟"在唱歌,用现在分词短语作宾语补语,表示鸟正在唱歌.
再问: saw不是过去式为什么要选singing
再答: 这一用法与see 的时态没有关系,只要是看见某人正在做谋事, 就选择doing sth 做宾语补足语. 其基本用法是:see sb doing sth. 看见某人正在做谋事. 所以虽然 see是过去时态,但是仍然要选择 singing . 在你给出的句子中的doing就是singing
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