Here are some common categories of verbs that don't take infinitives:
* Modal Verbs: These express possibility, necessity, or ability. They are followed by a base verb (without "to"):
* *can, could, may, might, must, shall, should, will, would*
* Example: *I can go to the store.* (not "I can to go")
* Helping Verbs: These are used with other verbs to form tenses and voices. They are followed by a verb form that is not an infinitive:
* *am, is, are, was, were, be, being, been, have, has, had, do, does, did*
* Example: *She is going to the party.* (not "She is to go")
* Perception Verbs: These verbs describe the senses and are followed by a present participle (verb ending in "-ing"):
* *see, hear, watch, notice, feel, smell, taste*
* Example: *I saw him walking down the street.* (not "I saw him to walk")
* Causative Verbs: These verbs indicate that someone or something causes something else to happen. They are followed by a base verb (without "to"):
* *make, let, have*
* Example: *She made him go to the doctor.* (not "She made him to go")
Important Note:
* Some verbs can be both finite and non-finite. For example, "to be" is a finite verb when used as a main verb, but non-finite when used as a helping verb.
* There are exceptions to these general rules. For example, some verbs like "help" can sometimes take an infinitive: *I helped him to move the furniture.*
If you're unsure about a specific verb, it's always a good idea to check a grammar guide or dictionary.