There is an "h" in the word "hour",but the "h" is silent.中的"an" ,"the"用地正确吗?

问题描述:

There is an "h" in the word "hour",but the "h" is silent.中的"an" ,"the"用地正确吗?
若错误,请指出,并改正

Ok ,因为h元音开头,用an不用a,因为是第一次泛指提到h,所以用不定冠词.
而后来第二个h,前面已经提到过,就是指那个h,所以用定冠词the