After a 1NT opening, a bid of 2 or 2 is a Jacoby transfer:
Such a bid promises no strength whatsoever.
After opener accepts the Jacoby transfer, you should proceed as follows:
Minimum Hands (0-8 Points). Simply pass the transfer:
|1NT 2 2 Pass: 0-8 Points and at least 5 hearts.|
It is lucky that you have a 5-card major: with a 5-card minor suit, you would have been forced to pass the 1NT opening!
Stonger Hands (8+ Points). With a stronger hand, you need to worry about game. If you have a 5-card suit, this is complicated by the fact that your partner may not have 3-card support. Here's the system: