在讨论过程中，突然出现一个新的问题，需要我们立即解决。(arise)

In the course of the discussion, a new problem suddenly arose, which we need to solve immediately.

考查时态和定语从句。陈述过去的动作，为一般过去时。“在讨论过程中” 为in the course of the discussion，作状语，位于句首单词首字母需大写。“一个新问题” 为a new problem；“出现” 为arise。“需要我们立即解决” 处理成非限制性定语从句 “which we needed to solve immediately.”，先行词为a new problem，作定语从句中solve的宾语。故翻译为：“In the course of the discussion, a new problem suddenly arose, which we need to solve immediately.”。