見到一個遊客獨自一個人, 想用英文同佢講, 你需要一個伴遊 ?

Hi Mister / Madam, Do you need a tourist guide?

or

Do you need a companion?

companion - 同伴

hi, i am from HK, do you need some help in surfing around the city? i am more than happy to help you.

但係得罪講句,你話比人聽你想做人地個伴遊.好似怪怪地.人地都唔知你咩葫蘆買咩藥.

倒不如話你想同外國人多溝通學好啲英文會冇咁怪

你需要一個伴遊 ?
Do you need a tour guide?

我可以做你的伴遊嗎 ?
Would you mind I will be your tour guide?

HI, would you like to have a tour guide? I would love to be your companion...

Hope I can HELP you when you use this sentence to a foreigner =D

為何要學這句英語?你真的會去問對方嗎?若對方是壞人，你便不好了，若對方是好人，相信他／她並不會接受你的好意的．別伙怎知你會否對他／她不利?　若是不正經的，遊客是不會亂跟陌生人的，希望你會明白，你到了外地旅遊時你會亂跟陌生人去觀光嗎?

無論如何，也告訴你吧!

Do you need an escort? Can I be your guide and companion?

希望你學會保護自己而不會用到上述那兩句．

2006-11-07 00:36:26 補充：
噢，第二行那字是　〔別人〕怎知你．．．．．．．．．．而不是〔別伙〕．．．．．．．．．．．

Do you need a companion to swim? I can do your companion swim?

Escort - will definitely not be a good choice of word especially when you are a lady asking a male foreign tourist. It would sound like your offering extra service to him.

Try this:

Hello there! I see that you are probably traveling alone here. Do you need a local like me to show you around town? If you would like I can be your guide for the day as I have much free time on my hands. This way I can practice my spoken English with you while you get to see the best places Hong Hong has to offer. What do you think?

伴遊可以用 Escort , 不過成人娛樂事業都會呢個字, 所以仲好用 Guide

Do you need a guide?
May I be your guide?

Do you need an escort? Msy I be you the escort?

2006-11-06 19:08:16 補充：
May I be your escort? ( not "Msy I be you the escort?")

Do you mind me to be your tour guide??