It doesn't matter if you don't know him well.if引导的是什么从句

it doesn't matter that /if you don't know him well .请问it 是形式 it doesn't matter__you don't know him well为什么用if而不是that it doesn't matter if是什么从句的固定类型,如何翻译?给个例句讲下吧 翻译下 I realized that it doesn't matter if you don't understan I____that it doesn't matter if you don't understand every wo it doesn t matter if you don t understand every word. I realize that it doesn't matter if you don't underested eve 翻译 later on ,I realized that it doesn't matter if you don't later on,I realized that it doesn't matter if you don't unde I realized that it doesn't matter if you don't understand ev 英语语法大师进,要I realized that it doesn't matter if you don't unde “It doesn't matter if you don't win ,just do your best”【英文高手