haven't = have not (have 是助动词,加个not 表示否定) 一般用来表达时态:现在完成时和现在完成进行时 I haven't seen you for ages. 很久没见你了。 I haven't been doing this for ages. 我好久没做这件事了。 然而 -- "没有" 用have表达:don't have 或者 have no ... 例句:I don't have a laptop. 或者 I have no laptop. 我没有手提电脑。
(1)have单独用的时候表示的是“拥有”的意思,是个动词,例如 I have a pen. 这种情况下否定是don't have (2)当是have done(过去分词)何种情况时,have是助动词,表示“做过”,例如 I have played this game yesterday. 这种情况否定是haven't done(过去分词)