We all know that,_.the situation will get worse.

把句子还原：We all know that the situation will get worse. if not carefully dealt with, 是状语从句的简化,可还原为： if the situation is not carefully dealt with. 状语从句的简化有两条规则：一是把相同的主语和be省去,其余照抄；二是把相同的主语省去,谓语动词变 V.ing 或 to v. ,to v. 只表目的状语.v.ing 可表时间、原因、条件或让步等.