what跟which用法该如何区别?

what跟which用法该如何区别? that which what 用法的区别 what和which在特殊疑问句中的用法区别 what which在表语从句中的用法区别,要例句 which,what与who的用法有何区别 what how when where which和in which的用法和区别 when,what,which,where用法 求What和Which的区别和用法?求What和Which的区别和用法,为什么提问有时用what有时用which?例如：Whst subject do you like和Which subject do you like?的区别 what ,which 的区别 what which区别下! which what 等在句中的用法Committed timeis the time during WHICH a person feels it necessary to do certain thing.这句话中的 which是什么用法?有什么用法规定?其他的如what等该如何应用? which book 和what book 的区别是什么?具体什么时候该用which 什么时候该用what 请问what、which、that在定语从句中用法的区别 what .that.where.which.when.who.whom.的具体用法和区别 在定语从句中 the one what which as who whom where when 用法及区别 （that which what where who whom whose） 从句的用法和区别 名词性从句中,what和which的区别及用法? that is,what is 和which is的用法区别是什么