有a little bit这个短语吗?

有a little bit这个短语吗? a little bit harder?这个语法对不对 a little a bit有什么区别 kind of=a little=a bit=a little bit?kind of、a little、a bit、a little bit 这四个相等吗?还是有什么区别? bit有很多的意思吗?及a little bit什么意思 a little of和a bit of以及a little bit和a little bit of有什么区别? a bit /a little/a little bit 这几个短语意思很相近,分别怎么用?最好举个例子! little a little a bit 用法上有何区别? a bit等于a little吗 a bit等于a little吗? 这句话中的英语短语可以这样换吗?They are a bit dirty!换成They are a little dirty! a little of,a bit of,a little ,a bit有什么区别 a little bit 后能加adj吗 a little bit a little bit just a little bit! a little bit quiet a little bit