whatsoever
are they the same in meaning?

1. I dont know English at all
2. I dont know English a bit
3. I dont know English one bit
4. I dont know English whatsoever
----to express you dont know anything about a language?would you I dont know English or I dont speak English here which one is more common?

Thank you

Question

whatsoever
are they the same in meaning?

1. I dont know English at all
2. I dont know English a bit
3. I dont know English one bit
4. I dont know English whatsoever
----to express you dont know anything about a language?would you I dont know English or I dont speak English here which one is more common?

Thank you

Answer

1 and 4 are fine. 3 is OK, but not that natural. 
2 is not right. I don't know a bit of English would be OK.

I don't speak English is the more natural option of those two. 
I think that normally we would add a quantifier "I don't speak any/much English".
There is of course also the case when someone might be able to read English, but not speak it.