A Chimp can speak basic English.
in fact, they can't..:) there have been many trials and efforts to do that. google 'Nim Chimsky'
Anyway I am sure my children's father speaks better English than you do..:):) thanks.
You say that making a 'th' is simple, but if it is not in your language, its hard to remember to do it (muscle memory)
For example in Welsh we have 'll' which is like a normal 'L' but instead of removing your tongue from your top gum, you leave it there, and blow through. Simple right? but for some reason every Welsh learner I have met is convinced that this is a 'CL' sound.