Maxsus ta’lim vazirligi nizomiy nomidagi Toshkent davlat pedagogika universiteti qoshidagi akademik litsey Nurmatov J. N, Kudratov K. X

Modal auxiliary verbs

Can, may, might, ought, should, will, etc.

Need (Must do) and used (in the past) are also not used in a continuous form.

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  Other verbs referring to states
  

Exist

Represent, mean*

Belong to, have*, own*, possess*

Include, involve

(The following verbs can be followed by a particular quantity):

contain*, hold*

cost, count, measure, weigh

afford, owe*

equal, consist of*, amount to

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  Notice that many of these verbs can be used with other meanings in which the continuous form is possible:
  

Are you seeing (=visiting) your doctor tomorrow?

I can’t stop thinking about (=imagining) food.

I was just admiring (=looking at with admiration) your new kitchen.

Mother was busy weighing flour for the cakes.