I read that like swimming and like to swim :     [...] While he likes to swim always means that he enjoys propelling himself through the water using his own body power, he likes swimming could also be used if he enjoys watching it as a spectator.   However, while liking and enjoying don't seem to be very different (the former meaning "" and the latter meaning ""), enjoy to swim is ungrammatical.   Therefore, I would like to know what the difference is between liking and enjoying in reference to the fact that, while like to swim is possible, **enjoy to swim* is not.  Thank you.
Why is it that we have to use the gerund form for the first example? I have been told that it is not grammatical to use the infinitive form.  For some verbs, it's okay:     I wanted to study English.   I had to study English.   I needed to study English.   I tried to study English.   I traveled to study English.   But, for some verbs, it's incorrect:     I ended up to study English.     Why is that the case?
Have a seat, guys   I think "have a seat" is a fixed phrase that does not change whether you address someone or a group of people.  Is that correct?  If you have more to add to the post, please do so as I would love to know more.