Markers can be very misleading and students focus them instaed of understanding the tense. Some merkers can used with different tenses depending upon th emenaing or reference:
Always:
1. With present simple (habitaul actions)
2. Always with present continuous (annoyance or disapproval of a habit)
3. Present perfect simple (a habit which has been practised till the present)
4. Past simple (habitual actions in the past)