It's a little awkward. People tend to be proficient at something, like a sport or musical instrument or language. It's impossible to be proficient at all knowledge. You can demonstrate your proficiency at something, or demonstrate your knowledge of something. If you're describing a superior level of knowledge, then "expert knowledge" would make more sense.
That is the correct spelling of "proficient" (capable, qualified).
It is to have a skill at doing something. Someone who has a great skill or good knowledge or a high level of ability at something can be said to be proficient. A skilled carpenter could be proficient at making furniture, for example.
No. We say "kind of knowledge." In English we need the partitive genitive to follow "kind."
Very knowledgeable, quite proficient, erudite, educated, literate, well-read...
That is the correct spelling of "knowledgeable" (having knowledge or experience).
That is the correct spelling of "proficient" (capable, qualified).
Yes. You can also say "shows proficiency in"
We usually say "knowledge of..."
You could say "nonproficient"; "unproficient" isn't really a "word" (you can say it, but it's unusual).
It is to have a skill at doing something. Someone who has a great skill or good knowledge or a high level of ability at something can be said to be proficient. A skilled carpenter could be proficient at making furniture, for example.
No. We say "kind of knowledge." In English we need the partitive genitive to follow "kind."
I believe to the best of my knowledge, this is the correct pronunciation, "Rott-vai-ler".
The correct way to spell it is "knowledge."
The correct spelling is professional (a proficient or trained person, or in a proper and helpful manner).
The correct spelling is knowledge (understanding, expertise).
It makes sense, but someone who is proficient in their linguistic abilities would ...probably not use the term 'lingual abilities', which primariliy means they are good at using their tongue,not need to tell someone that they have good langauge skills because it should be self-evident and thus not need a statement of the obvious.
Very knowledgeable, quite proficient, erudite, educated, literate, well-read...