Scrambled Eggs with Shrimp and Sherry

1 tablespoon vegetable oil
1 clove garlic, finely chopped
1 tablespoon finely chopped fresh ginger
1 cup peeled, cooked shrimp
6 eggs
1 tablespoon sherry or water
1 tablespoon soy sauce
1 scallion, green and white parts, thinly sliced

Heat the oil in a skillet over moderate heat. Add the garlic and ginger and saute 1 minute. Add the shrimp and saut