elder sister

I wish to quote the answer given by a family relationship expert as follows:

If you have more than three sisters, you might refer to them as "my eldest sister", "my second-eldest sister", my youngest sister", "my second-youngest sister", etc. If you have exactly three sisters, you might say "middle sister" for the one between the oldest and youngest of your sisters. However, none of these include information about whether your sisters are older or younger than you are.

If you talk about "my big brother", then you are referring to a brother who is older than you are. Without further context, it suggests that you have only one brother who is older than you are.

If you talk about "my little sister", then you are referring to a younger sister. Without further context, it suggests that you have only one sister who is younger than you are.

Reference: http://www.english-test.net/forum/ftopic52775.html

In English, we seldom mention seniority for siblings, but if you insist on it my suggestion to your question would be

My eldest sister;
My second-eldest sister; and
My third-eldest sister

There might be a need to tell exactly who is older than the other, in particular when compiling a family tree.

elder sister 係姐姐咁解我1,2,3個家姐..>我係想問如果除左講佢地個名要點講..my second elder sister or sister Amy or sister No.2= 二家姐my eldest elder = 大家姐三家姐= sister Susan. or sister No. 3 if you really want people to know that you have more than two sisters.

hi, in English ... only have elder sister and younger sister.
if u want to say 1,2,3個家姐, you should say ....

1家姐 = she is my elder sister

2家姐 = she is my mother's 2nd (second) daughter

3家姐 = she is my younger sister / she is my mother's 3nd daughter

hope can help!

elder sister 係指比你大嘅家姐,There is no first, second .......sister,如果你想叫佢地,可以直呼佢地個Englih name,姐係Sandy,Angela...呢d