Non - Progressive Verbs

In English, some verbs are non-progressive (also called "stative verbs" or "non-action verbs"), they are rarely used in progressive tenses. They describe states, not actions. ("States" are conditions or situations that exist.)

*Some verbs have both non-progressive meanings and progressive meanings. 

Example:

I  think that your cousin  is very nice. (think means "believe")

I’m thinking about my trip to  Rome. (think means "thoughts are going around in my mind right now")

** *Am /is/are being  +   an adjective describes temporary behavior. In the example, Al is usually not foolish, but right now he is acting that way.