I am too busy washing clothes to talk about computers这是什么意思

I am too busy washing clothes to talk about computers
意思是：我忙于洗衣服,以致于没时间谈论电脑.为什么不是too not to……没有not为什么翻译成否定too ... to ...结构的意思就是：“太。。。以致于【不能】。。。”又如：He is too old to climb the mountain.他年纪大以致于【不能爬】这座山。.