How often do people say "gotta", "wanna" or "gonna" in English speaking countries?

Question

I learned these three words from *Collins Cobuild Advanced Learner's English Dictionary*. > * got|ta /g'ɒtə/ > Gotta is used in written English to represent the words 'got to' when they are pronounced > informally, with the meaning 'have to' or 'must'. > Prices are high and our kids **gotta** eat.> * wan|na /w'ɒnə/ > Wanna is used in written English to represent the words 'want to' when they are pronounced informally. > I **wanna** be married to you. Do you **wanna** be married to me?>> * gon|na /g'ɒnə, AM g'ɔːnə/ > Gonna is used in written English to represent the words 'going to' when they are pronounced informally. > Then what am I **gonna** do?Here are my questions: 1. How often are these words used in oral English? 2. Are they only used in informal speech/conversations? 3. Do educated people also use these words?

Answer 1

Everyone, from all kinds of backgrounds, use these words in spoken language, and you will hear them often. They can appear in written language, but never in anything formal.