Gorgonzola Pear Salad

1 head red leaf lettuce
3 pears
1 pkg gorgonzola crumbles
1 avocado
1 purple onion

1 pkg pecan pieces
1/4 c sugar

1/3 c olive oil
3 T red wine vinegar
1 1/2 t sugar
1 1/4 t mustard
1 clove garlic
1/2 t salt and pepper