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分析句子成分!Knowingthathisfatherwouldcomebacksoon,hetidieduptheroom!knowing句是什么成分that句是宾语从句?tidied也是谓语knowing的角色?

题目详情
分析句子成分!
Knowing that his father would come back soon,he tidied up the room!knowing句 是什么成分 that句是宾语从句?
tidied 也是谓语 knowing的角色?
▼优质解答
答案和解析
可以这样理
前半句和后半句的主语都是“HE"!
还原可得:
he knows that his father would come back soon,he tidied up the room!
当两句句子主语一致,可以前半句主语省略,前面的动词know变成动名词充当主语.