英文： 是因为。。。还是因为。。？

is it beacause ......or....

is it beacouse it is raining or you are lazy?
《下雨了，你妈妈要你去买酱油，你不肯去》你妈妈就说

是因为下雨呢，还是因为你懒

is it because (of/that)...or...

Is it a matter of ...or a matter for ...?

is it because (加句子）....or ....?
is it because of (加名词）...or ...?

because of ...or...?