I knew all about rattlers never being supposed to strike wit

I knew all about rattlers never being supposed to strike without warning.
翻译：我知道据称响尾蛇在袭击之前都要发出响声以示警告的.
请帮忙分析一下这个句子的语法成分.
是否可以这样分析：I主语,knew谓语,rattlers是宾语,never being supposed to strike without warning可否看作是宾语补语?这个句子与下面这个句子：I saw the boy hitting the dog.是一样的结构吗? Fenqing1981 1年前他留下的回答 已收到1个回答

fh9200 春芽

该名网友总共回答了17个问题，此问答他的回答如下：采纳率：82.4%

对

1年前他留下的回答

6

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