I want to get some trial lessons to choose the teacher for learning English. The verb "to try" means that a person makes an attempt or effort to do something. For example, I am trying to explaining the meaning of this verb. To try out means a test of the potential of someone or something. For example, I am going to try out my new camera.

I am no native English speaker, I have just lived a bit in Scotland. But, being a native Italian, my understanding is that "to try" is just provare, while "to try something out" or "to try out something" is also sperimentare, collaudare. You usually cannot use sperimentare or collaudare with a person, so "to try somebody out" or "to try out somebody" must mean something different. In fact it means prendere (qualcuno) in prova, prendere in prova (qualcuno). So, if you really want to say that you want to "prendere in prova diversi insegnanti", you could say "to try different teachers out". But if you just want to say "provare diversi insegnanti", it is simply "to try different teachers", without "out". And "mettere alla prova diversi insegnanti" would be "to put different teachers to the test". PS: "out" means "fuori" and so "to try out" means something like "provare (qualcosa), per vedere cosa ne esce fuori". So "out" gives the idea of collaudare, sperimentare. But there isn't always a logic in prepositions used in English phrasal verbs :-) We rarely use prepositions to make new verbal meanings, we prefer to use different words in Italian.

try - (verb) 1. attempt something: to make an attempt or effort to do something. . . ex. I will try teacher Mary instead of teacher Joy. 2. test something for purpose of assessment: to test, sample,or experiment with something in order to assess its usefulness, worth, or quality ex. I will try another software for my computer. try - is also a noun, and is used in rugby ( a score achieved by touching the ball on the ground behind the line of the opposing team's post goal lines) ex. 1. Making your own sentences is a good try. 2. 3 points are scored for a try in rugby league. try out - (verb) be tested for suitability ex. I will try out for the university basketball team.

Different and several in this case are close in meaning but can give the sentence 2 different meanings. To say: Try different teachers can mean simply try teachers you are not using now. Try several teachers can mean try more than one or try many. So it depends on what you're trying to say. If you want them to try teachers they're not using now, say different. If you want to say try many teachers, say several.

correction: by mistake