Nope, you can't. That's the one thing that makes languages different - the set of sounds used. Every language has it's unique sounds, that our native language doesn't. We have to understand how such sounds produced. My hint for you: in words "through" and "throw" producing the "th" sound to me is like trying to produce "t" and "s" sounds simultaneously. But that's one half, the other one is "th" in words like "the", "they", "them", "this". It's hard to write sounds, but "th" in "they" to me is like "t + z" with a bit of "d" in between. Hope this helps :)