Unit 2 Saving the Earth
词句精讲精练
词汇精讲
1. pollute
pollute为及物动词,意为“污染,弄脏”;pollution为pollute的名词形式,意为“污染”,是不可数名词。例如:
We should not pollute our rivers with waste. 我们不应让废弃物污染我们的河川。
Pollution is a big problem. 污染是个大问题。
【拓展】含pollution的习惯用语:
air pollution 空气污染
noise pollution 噪音污染
2. although
although的意思相当于though,意为“尽管,虽然”,用来引导让步状语从句。它所引导的从句不能与并列连词but; and; so等连用,但可以和yet; still等词连用。例如:
Although he lives alone, he doesn’t feel lonely.= He lives alone, but he doesn’t feel lonely.
虽然他一个人住,但他并不感到孤独。
There is air all around us, although we cannot see it.