具体我不知道您的原话,但是从语法上讲,肯定这种是正确的：I would like to ask what it is for
后面的从句并非单个语问提问,所以一定要正常语序,比如：I donot know what he said.I would like to know what animal it is.
如果是疑问句则是：what animal is it?