I study A for three hours. translate :我用三小时学习A。 negate :我没有用三个小时学习A I will study A for three hours ranslate :我将用三个小时去学习A。 negate :我以后不会去用三小时去学习A。 I studied A for three hours (no longer study it) translate :我曾经用了三个小时来学习A，但我现在不再学习它了。 negate :我从来都没有用三小时来学习A。 I have studied A for three hours (and still study it) translate :我现在依然用三个小时来学习A。 nagate :我现在没有用三小时来学习A了。 I want to study A for three years. translate :我想要用三年来学习A。 nagate :我不想用三年来学习A。

For chinese...! I meant to say how do you translate these into chinese and then also negate them in chinese... Oops!!

Is this for Chinese, or English?