PRESENT TIME - Non-active verbs

Non-Action Verb are also called “stative verbs”, or “nonprogressive verbs”.
(a) I know Ms. Chen
Incorrect: I am knowing Ms. Chen
(b) I am hungry. I want a sandwich
Incorrect: I am wanting a sandwich
(c). This book belongs to Mikhail
Incorrect: This book is belonging to Mikhail.
Some verbs are not used in progressive tenses. These verbs are called “non-action-verbs”. They express a situation that exists, not an action in progress.
Non-Action-Verbs
Be
Believe
Belong
Exist
Forget
Have
Hate
Hear
Know
Like
Love
Own
Need
Possess
Prefer
Remember
See
Sound
Think
Understand
Want
COMPARE
(d) I think that grammar is easy
(e) I am thinking about grammar right now
(f) Tom has a car
(g) I’m having a good time.
Think and havecan be used in the progressive. In (d): When think means “believe,” it is not nonprogressive. In (e): When think expresses thoughts that are going through a person’s mind, it can be progressive. In (f): When have means “own”, or expresses possession, it is not used in the progressive. In (g): In expressions where have does not mean “own” (e.g., have a good time, have bad a time, have trouble, have a problem, have company, have an operation), have can be used in the progressive.

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