In English language, verbs are either active or stative. Some verbs can be both active and stative depending on their meaning .
Stative verbs express a state rather than an action. They more often than not relate to emotions, thoughts, senses etc. So we use the simple tenses for them. However, there are also some verbs, as I earlier said, which are both active and stative:
'To see'
I see you, and you see me.( I see you with my eyes)
You are seeing your beloved. You've been together for a while.(you are dating her)
You hear music coming from the bathroom, guess your dad is singing.( you are experiencing the sound now)
You are hearing voices.( you are imagining)
Action verbs are verbs that express action. Ex: jug,drive,swim,run...
اگه همین موارد رو بصورت have بیاریم اشتباهه
The meaning may change if you change 'progressive' to 'simple present'. When using 'progressive', note that you ARE emphasizing on the continuity of the action. It has an start, middle, and an end.
I'm having a bad day: You have been dealing with lots of problems, you have had a series of mishaps, your car has broken down, your roof is leaking... as you see, on that certain day, you ARE having lots of problems.
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