Future actions (paired with go, leave, move, etc.) or actions that are currently in progress=am, is, are+being+past participle \[\text{Actions that were in progre...Future actions (paired with go, leave, move, etc.) or actions that are currently in progress=am, is, are+being+past participleActions that were in progress at a specific time past=was, were+being+past participleActions that happened at an unspecified time in the past or that begin in the past but are still currently occurring=has, have+been+past participle