英文差, 成日都分唔到

Surname:姓　（又稱為family name及last name，因為外國人的姓都是寫在後面的）
eg. Jacky Chan

First Name (外國人的名稱先寫名後寫姓，所以First Name是指名稱)
eg. David Chan, David是他的first name.

Middle Name(第二個名的意思。有些外國人會為子女改兩個名，first name是正統及一般常用的名，middle name是第二個名，其實可以有好多個middle name）
eg. Alexander Joseph Chan
你可以叫佢Alexander J. Chan. Alexander是他的first name，Joseph是他的middle name， Chan是他的surname.

2006-12-23 12:48:23 補充：
One example on Chinese name:eg.Chan Tai ManChan是family name, surname and final nameTai Man is First name無middle name

let's look at some examples:
1) michael jackson
surname (=family name): jackson
first name: michael
middle name: no
2) David Robert Joseph Beckham
surname (=family name): beckham
first name: david
middle name: robert joseph
3) chan tai man
surname (=family name): chan
first name: tai man
middle name: no

hope these examples can help you understand better!

Surname:姓,別號
First Name:名
Middle Name...我反而未見過!!!

Surname = Lau
First Name = Mary
Middle Name = Mary Bee Lau
Middle Name = Bee

Surname 姓
First Name 名
Middle Name 中間名

西人的姓會擺在名後面, 如julia roberts姓roberts