a. ” That ” in the singular is fine. ” That is a model of a Spitfire. ” said at a plastic model expo is perfectly fine, unless it is a model of a Thunderbolt. The person using the singular ” that ” may be explaining the display to his child. This is a good thing – young people need to know about Spitfires, Thunderbolts, and plastic models in general. You have engaged the attention of the masses to a certain extent. Let us hope they continue to take an interest. If Pappa explains the difference between Spitfires and Hurricanes and Typhoons to the youngster and the kid asks for all three kits, we are on a winner!
b. ” That…That ” in frosty tones is not so so good. If it is said by an imperious club committee member as they point to your model, you can take it that there is something they don’t like. Not that you are obliged to do anything about it, mind. Just chill and see where the whole thing is going. You can always bite them if they keep on pointing.
c. ” That…That…That…” on the other hand, is a sign that you have succeeded. If it is accompanied by a squeal and a little dance you know you may have become a legend. It means that the viewer has seen your model and it has stirred up some memory or recognition on their deepest level. They cannot even articulate why they like it, but they do. Now is the time to sidle up to them and suggest they buy it for $ 500. If they press their wallet on you, grasp it and run.
Ya never know yer luck in a big model exhibition…