How much vocabulary, do you think, is required for the EFL students to fluently speak English Language?

It is approximately4500 vocabulary would enable a student of EFL to communicate the English language. It is said that an average English man or a native speaker of English possesses7000 vocabulary. A great dramatist of English, Shakespeare is said to have used more than35000 vocabulary in his all books.John Milton is said to have made the best use of approximately25000 vocabulary.

it is not a matter of more vocabularies, it is a matter of knowing and grasping the language and the grammatical rules. But the more vocabularies a one knows and has the better will he expresses the meaning he wants.