The standard of pronunciation is to learn how to say it. You can watch English movies or soap operas widely, mainly to learn everyday language. It's best to find a notebook to record simple words and flip through them if you have nothing to do.
The most important thing is to be bold and not shy. In the final analysis, oral English is for communication, and the other party can understand it before completing the task. Therefore, when talking to foreigners, don't put pressure on yourself and don't be afraid of making a fool of yourself. The other party can generally understand. Even if you don't understand, you can express it in another way.
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