Questions about example sentences with, and the definition and usage of "Proficiency"

She read the article with proficiency. She demonstrated her proficiency in Japanese.

You can say proficiency, but "oral talk" is not correct. You may ask: is it ok to use the word proficiency in an oral speech. Or, oral presentation.

@Ealdorwolf: If you are talking to students of English, it might work better. To a native speaker, we don't necessarily have the concept of 'levels of english' without additional context. It would be more natural to talk about experience (How experienced are you with English?) or (How well do you speak English?), or talk in concrete fashion (Do you classify yourself at a beginner/intermediate/advanced level of English usage?).

You must be quite proficient at Korean if you understand 맨숭맨숭하다 or Your Korean must be quite advanced if you understand 맨숭맨숭하다 You don't use "as to"

Perfect 👍

I will take the TOEIC test to see how proficient I am in English.

Everybody already gave you good advice. I just want to add something as a learner of English and Chinese. First of all, I studied English dialects at university (the basics) and I can say that, if you don't have good listening abilities, you must select carefully your listening materials. For example, I think that Australian accent is very difficult to understand, and also the southern dialects of USA. I suggest that you listen to Standard English/British English materials if you want to start from 0. Another mistake I made in the past: when I didn't understood a word, I used to get completely lost. Now, I try to listen carefully, and if I hear a word that I don't know, I try to get the meaning from the context. Focusing on each word is good, but focusing on the entire sentence is another good method. You can use both. I have one last advice. You should have a book (or find a website) with transcriptions of the tracks you're going to listen. While listening, keep an eye on the text and repeat what you've just heard (and read). Don't wait until the speaker finishes the sentence. Don't read with him. Read with a little delay. Imitate the speaker. This is good both for your pronunciation and understanding. For me, it worked.

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