點樣在三十秒內以最清楚、又精簡、最能表達自己既方式來介紹自己？？？即係話可以講D乜最能代表自己？

depends on the situation, in front of new office people? new friends? or clients? if it is work related you can start saying how long you say something about your work, your current project (because it is more interesting and more impressive), if you have special hobbies, eg playing magic or very good at puzzles, you can also mention that too, the idea is to be impressive - first impressions ar!

30秒咁少時間基本上一定要講出自己姓名及身份,主要係睇在什麼埸合有少少不同變化啦!
例如,
1,校友聚餐----我叫xxx,係第xx屆的,以前都時時幫某sir搞活動的,今日來招呼大家,開心d唔使客氣!
2,會員活動----我叫xxx,或者叫我阿x都得,參加呢個會都幾年了,今日呢個活動幫手做義工,有乜需要幫手的叫我啦!
3,新同事----早晨! 我係xxx,叫我xx好了,以前都是做開xx工作的,我今天剛上班,很多方面希望多多提點!
4,一般聚會----我姓x,或者叫我xx啦,我是做xx工作的,某某sir是我的老師,今天很高興來祝賀他!
以上例子都差不多了,在應用時相信改變一些便可以了!