Question

下面这个句子的语法结构是啥，主谓宾分别是?

it remains essential that a purchaser uses great care in divulging financial information online,particularly to a site that he is not familiar with.

Answer 1

东西为中心词，不知道的为定语修饰东西，如漂亮的女孩，只是个短语，没有主谓宾。