如何学习用连词as引导的状语从句

1、时间状语从句连词as作正当。。。的时候，随着...讲，例如He came up as I was speaking, 再如as a little girl she began to operate a computer

3、原因状态从句连词as或inasmuch as作“由于，因为”来讲，例如as this problem is of great interest, we will discuss it once again

5、一般比较从句内常省略与主语相同的成分，as...as和...一样的， 这里第一个as是副词，第二个as是连词，例如this line is as long as that one(is)