Different languages are different. There are a lot of sounds that make up languages, but one language never uses them all, AFAIK. For me to learn one foreign language, I had to walk around the school saying the sounds that weren’t in my language. It took hours and hours to get them right. It also took a lot of feedback. Since I do not really have an ear for the tune of a language, I still have troubles, no matter how good my pronunciation is. You know you are having language problems when someone whose language you are speaking looks at you like you are speaking blather and doesn’t understand at all.