this is a boy who has finished his homework who has 可否省略啊 定语从句 转成 后置定语 谢谢

this is a boy who has finished his homework who has 可否省略啊 定语从句 转成 后置定语 谢谢

this is a boy with his homework finished
不可以改为:
This is a boy having finished his homework.
因为 having finished his homework.是现在分词的完成式, 语法上不可以作后置定语
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This is a boy who has finished his homework.
This is a boy having finished his homework.现在分词短语，后置定语。