Thankfully, Modern Warfare 2 does have split-screen capability, meaning you can play co-op with friends. However, you'll only be able to use it in Private Matches within the Multiplayer mode. Note that it also only supports two players rather than the classic four-player split-screen.
Pragmatics encompasses phenomena including implicature, speech acts, relevance and conversation, as well as nonverbal communication. Theories of pragmatics go hand-in-hand with theories of semantics, which studies aspects of meaning, and syntax which examines sentence structures, principles, and relationships.