This document discusses four major modes of interpreting: simultaneous interpreting, consecutive interpreting, whispering interpreting, and relay interpreting. Simultaneous interpreting involves listening and speaking at the same time to convey sentences before the speaker finishes. Consecutive interpreting occurs after the speaker finishes, allowing time for note-taking. Whispering interpreting involves whispering to a small group nearby. Relay interpreting is used when there are multiple target languages, with interpreters relaying through a common language.