Haven’t is the short form of have not. You use it in speech all the time, and in messages and stories.

Haven't is是 of have not「have not」的 the short form縮寫。 You你 in speech在口語裡 all the time隨時 use it都在用它， and in messages and stories在訊息和故事裡也是。

I haven’t, you haven’t, we haven’t, they haven’t. With he, she, or it, English wants hasn’t, not haven’t.

I haven't我沒有、 you haven't你沒有、 we haven't我們沒有、 they haven't他們沒有。 With he, she, or it遇到 he、she、it， English英文 wants要的是 hasn't， not haven't不是 haven't。

Two common jobs: (1) the present perfect — I haven’t seen her today (not in this time / not yet); (2) with got in British English — I haven’t got a pen (= I don’t have a pen). Though actually “I haven’t a pen” without got is possible in older or very British speech, but learners are safer with haven’t got or don’t have.

Two common jobs兩個常見工作： (1) the present perfect現在完成式—— I haven't seen her today我今天還沒見到她 (not in this time / not yet這段時間裡沒有／還沒)； (2) in British English英式英文裡 with got配 got—— I haven't got a pen我沒有筆 (= I don't have a pen)。 Though actually不過其實 without got不加 got 的 “I haven't a pen”， in older or very British speech在較老派或很英式的口語裡 is possible是存在的， but learners但學習者 with haven't got or don't have用 haven't got 或 don't have are safer比較保險。

In a careful school essay, teachers often prefer have not written in full.

In a careful school essay在講究的學校作文裡， teachers老師 often常常 prefer比較希望 have not把 have not written in full完整寫出來。