英语四级作文高分句型解析:
The plastic bags some people throw away casually cause the white pollution to our environment, which is very harmful because plastic bags cannot be decomposed.
有些人随手扔掉塑料袋对我们的环境造成了白色污染,这是非常有害的,因为塑料袋无法分解。
点评:这是一个由which引导的非限制性定语从句,which指代的是前面整个主句,在主句中"some people throw away casually"是作定语修饰"the plastic bags",在some前在略了that,在非限制性定语从句中又包含了一个由because引导的原因状语从句。