Generally, air will be heavily polluted where there are factories.一般来说，有工厂的地方空气污染就严重。Wherever you go, you should work hard.无论你去哪里，你都应该努力工作。地点状语从句一般由连接副词where, wherever等引导，已经形成了固定的句型，例如：Where there is no rain, farming is difficult...