Here's why and how to correct it:
* Incorrect Structure: The phrase "is not possible" is used incorrectly. It should be used with an infinitive, like "It is not possible to continue his studies."
* Subject-Verb Agreement: The sentence lacks a subject for the verb "to continue."
Here are some correct ways to express the same meaning:
* He is unable to continue his studies.
* It is not possible for him to continue his studies.
* He cannot continue his studies.
* Continuing his studies is not possible for him.