It's important to remember, that ASL, like every other sign language, is an individual, linguistically independent, natural language and by no mean a translation of spoken English into signs and gestures. ASL follows its own rules of syntax and grammar.
Start by watching the following video
Christine Burroughs goes shopping and the example perfectly shows, how ASL consists not only of hand gestures, but also of lip-mouth movements, body movements, eye movements and even eye brow movements. Watch how she opens a valet, how her fingers indicate walking from one aisle to the next, how items are taken down from the shelves, boxes opened and the shopping cart is pushed. There is, of course, no spoken comment, but even a sign language novice can clearly understand what it's about.