1. (2017·广东模拟) And because of the bad weather, we couldn't see anything below.由于糟糕的天气，我们在下面什么也没看到。

点拨：①because of 介词短语，"因为，由于"，后接名词、代词或动名词，不能接句子。

He can't take a walk the rain.

②because 连词，"因为"，引导状语从句，表示直接明确的原因或理由。

I don't buy the shirt it was too expensive.