题目内容
把下面的状语从句改为不定式短语
He was very happy when he saw us so happy．
答案：
解析：
解析：
He was very happy to see us so happy．
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题目内容
把下面的状语从句改为不定式短语
He was very happy when he saw us so happy．
He was very happy to see us so happy．