Do you know where I can exchange the money?句子中where引导的是作know的宾语从句,因为know在此处中是及物动词,后面必须要宾语.
I will go where work conditions are difficult.句子中where引导的是地点状语从句,因为go是不及物动词,后面的句子自然就是状语成分.
She seems as if she had done a great thing.此句中用的是虚拟语气,是对现在时的一种虚拟,一般as if作虚拟的引导比较多,前面的是seems是现在时,后面的as if
的时态要倒退一个,就是过去时.
He made a promise that he would never come late.是同位语从句,句子中的that引导的从句与promise是同一的,从句中有完整的主谓宾成分.如果是定语从句的话,所修饰的那个词必须要在从句中作一个主语或者宾语.