The phrase "an awful lot" is an idiomatic expression that means a large amount or quantity. It can be used in both positive and negative contexts, depending on whether the speaker intended it as a compliment or criticism. For example, one might say "He's done an awful lot of work today," to express admiration for someone who has put in a great deal of effort. On the other hand, if someone is being lazy or unproductive, you could say they haven't done "an awful lot."