Question

当宾语从句是一个特殊疑问句时,如何处理

Answer 1

特殊疑问句语序是主谓颠倒的对吧，作从句的时候，就把那个特殊疑问句按照正常语序表达，疑问词仍然保留位置。
比如就说who is that man over there?
作为从句就说 I want to know who that man is over there.

Answer 2

从句要用陈述语序：如Do you know what it is? 这个句子中"what it is"就是宾语从句，用陈述句语序。再给个例句吧：Tell me why you don't love me. I ask him how I can get the bus.

Answer 3

宾语从句中不管主句是什么时态，如果从句是客观事实或者科学真理永远用一般现在时。不管从句是陈述句还是一般疑问句。所以你的这道题he
asked
if
the
earth
__travels_
around
the
sun.
(travel)因为the
earth
是第三人称单数