Present

1. perfect

1.1. Unspecified point in the past

1.2. action that occurred in the past, but has a result in the present

1.3. Talking about general experiences (ever, never)

1.4. Events - that recently occurred (just) - occurred up to now (yet) - occurred before you expected (already) - began in the past and haven't changed (for, since)

2. perfect progressive

2.1. actions beginning in the past and still continuing (focus is on the action) – mostly with since (point of time) or for (period of time)

2.2. recently completed actions (focus on the action)

3. simple

3.1. Actions regular and repeated

3.2. fact

3.3. habit

3.4. generally true

4. progressive

4.1. Actions happen at the moment

4.2. Actions started in the past but hasn't finished

4.3. Actions happening around the time of speaking but not necessarily at that exact moment.