it is the first birthday of my mother

问题描述:

it is the first birthday of my mother
the first 前面加 the
什么时候序数词前不加the?
我说的是这个题 序数词前加the 对不?
泛指 这一类的我懂

什么时候不加?例如1.First,this is the most important part in the whole assignment,second,you have to pass it to pass the exam.这里就不需要加THE2.she decided to do homework first.这里也不需要加THE一般情...