When each time I tried to say English ,but something stop me

then I notice why really important and necessary to training them 

you might often feel yourself  able to speak more,but each time that it’s not real,I cannot speak it prefect it’s like that my mouth doesn’t control by me

this was what I ever confused .but now i have already know how to fit it.like any skill you leaning doesn’t mean you know how to apply it.there was one step need to do.practice it until I can easy to say