Hello.

I'll be grateful for your help.
Is it possible to use -ing forms after the verbs "ban", "prohibit" and "forbid", for example:
1)The government bans funding such organizations.
2)The state prohibits using such technologies.
3)French law prohibits denying the Armenian henocide.
Thank you very much for help.

Yes. All are correct.

All of your -ing words are gerunds and used as nouns. They are direct objects in these sentences.

Hello! Yes, it is possible to use "-ing" forms after the verbs "ban," "prohibit," and "forbid." In fact, it is quite common to do so. The "-ing" form is used to indicate the action or activity that is being banned, prohibited, or forbidden. Your examples are correct:

1) The government bans funding such organizations. (The action being banned is "funding.")
2) The state prohibits using such technologies. (The action being prohibited is "using.")
3) French law prohibits denying the Armenian genocide. (The action being forbidden is "denying.")

To get the answer to your question, you can consult a reliable English grammar source or look up examples of sentences using the verbs "ban," "prohibit," or "forbid" followed by "-ing" forms. You can also analyze the usage patterns of these verbs in context to see how they are commonly used.