I've been living in Luxembourg for the past twelve years.
I have a Bachelor's Degree in "English Language and Literature" and a TEFL/TESOL Certificate.
My classes are conducted ONLINE, one-on-one. My students already have conversational skills; from Pre-Intermediate up to Advance levels. So far, I see the same theme playing out. People who already speak the language but feel the need to expand their vocabulary, improve their grammar, and have their pronunciation corrected. Actually, I always tell them that no matter how much they read, how many movies they watch, and how much or little they use the language at work, they'll never acquire fluency unless they practice, practice, and practice the language. That's why, in my humble opinion, I consider grammar, vocabulary, and pronunciation, the three main pillars of a good and productive English Conversation Class.
Any language will be easy or difficult to learn according to the amount of exposure one gets to it. Out of the three abilities, speaking, reading, and writing, speaking is the one that gets more emphasis.
Again, we're back to the good old PRACTICE. The more you do, the easier it will become.
In my opinion, no. But learning will be directly proportional to the practice given to the language.
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