there is some doubt whether能换成if吗

问题描述

精选答案

there is some doubt whether不能换成if，因为此时Whether 引出来的是同位语从句不能用if。

中文意思是“怀疑是否”例如，在这湖里有人说看到海怪但是否真的存在依然有些怀疑。For example, some people in this lake say they saw sea monsters, but there is still some doubt that they really exist.