If you have enough for game or slam, just bid it (or use Blackwood). You can also respond with a new suit (forcing). If you are interested in game and want to know more about partner's hand, respond 2NT (see Larry's article on FEATURE).
But, in most cases, you won't have game interest. Should you pass? Not if you have 3+ card support. Raise to the appropriate LAW of Total Tricks level.
With 3-card support, you know your side has 9 trumps. Raise to 3. This is not invitational (you didn't bid 2NT).
With 4-card support, raise to the 4-level (10 trumps).
Follow this advice blindly? No. If you are vulnerable and/or very flat (4-3-3-3) and/or full of queens/jacks, you don't have to do it!
With neither side vulnerable, what do you South do here:
West | North | East | South |
---|---|---|---|
2 | Pass | ?? |
Q32
32
A6542
K107
Pass
2NT
3
4
With neither side vulnerable, what do you South do here:
West | North | East | South |
---|---|---|---|
2 | Pass | ?? |
2
KJ72
A652
KJ107
Pass
2NT
3NT
Other
With neither side vulnerable, what do you South do here:
West | North | East | South |
---|---|---|---|
2 | Double | ?? |
832
2
KQ72
J10765
Pass
2NT
3
other
With both sides vulnerable, what do you South do here:
West | North | East | South |
---|---|---|---|
2 | Pass | ?? |
J432
QJ2
QJ5
K107
Pass
2NT
3
4
With neither side vulnerable, what do you South do here:
West | North | East | South |
---|---|---|---|
2 | 3 | ?? |
A832
A2
A10542
73
Pass
3
3NT
4
4