问题描述：
英语主谓宾关系
1.I handed it to our teacher.2.He wrote carefully some letters to his friends.为什么前一句是S+V+O+OC 而后一句是S+V+O+O
1.I handed it to our teacher.2.He wrote carefully some letters to his friends.为什么前一句是S+V+O+OC 而后一句是S+V+O+O
问题解答：
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