Simone
二楼答得不错，congest （动词）或 congestion（名词）是最常用来形或雀容交通拥堵的词。唯一的瑕疵是，经常（衫岁早always 或 often）和 偶而（occasionally）还是有程度上的差别。我的建议是： 1. These two (roads / streets) are often congested. It's (awful/terrible).2. We've (already) been stuck in traffic for three hours.简洁点直接用 stuck in traffic 就行，雀裤无需加冠词 the；already 也是可加可不加 - 语法上都可以接受。
