I don't know why always like this!Don't do like that!don't know why always like this!Don't do like that!为什么一个用this另一个用that

I don't know why always like this!Don't do like that!don't know why always like this!Don't do like that!为什么一个用this另一个用that
I don't know why always like this!Don't do like that!
don't know why always like this!Don't do like that!
为什么一个用this另一个用that

I don't know why always like this!Don't do like that!don't know why always like this!Don't do like that!为什么一个用this另一个用that
不同意楼上的观点.
在这个句子里this和that都是抽象性的指示代词,并非指具体的物,而分别
有“这样”和“那样”之意.
全句可译为：我不知道（你）为什么喜欢这样!别再像那样做了!
在why引导的宾语从句中省略了you( I don't know why you always like this!)
至于为什么一个用this,一个用that,其实语法上没什么区别.比如将句中的that换成this语法上也没错,只是与前面的that重复了.而且英语口语中也常说：
Don't do that again.这是习惯用语

这句话的意思是：我不知道我为什么总是喜欢这个，不喜欢那个。在这个句子里，“this”是【这个】的意思，而“that”则是【那个】的意思，明白了吗？？？？