Question

这个英语句子怎么翻译以及句子中用逗号隔开的那两个小句子怎么分析？

And then there are those who，not knowing what questions are coming at them，and having no resources to refer to，can freeze.

Answer 1

...{ who, [ (not knowing...at them,) (and having ...refer to )] can freeze.}

大括号who引导的定语从句，can freeze.是该从句的谓语。

中括号是两个并列的分词短语，用作状语。