I am a native English speaker and I understand how the English language works...mostly. There are some things that I just can't wrap my head around (understand). For example, I have a friend who is from South Korea and at the time of a particular conversation she would pronounce the word "one" as OHN (as in own not as in John). I explained the proper way to say it and explained that if she goes by how we are taught to read English she is right, but this word is different. 

Another example of changes in pronunciation is with the words woman and women. When speaking of more than one woman, instead of saying "womEn" we tend to say "wEmEn". But why? The letter O doesn't usually make that sound. 

Also, sometimes the letter C doesn't seem necessary in the English language except for the CH combination. All other uses can be replaced by the letter S or the letter K (unless there is a word that I'm not thinking about right now). 

People who speak Arabic have different S sounds and K sounds in their language, so maybe they can hear a difference between when we use a C and when we use a K. 

If there are any Arabic speaking people who see this this, please let me know if you can hear a difference. It will be very interesting to me to know. Also, to anyone who has had a chance to study English more deeply, please let me know what you think. Thanks.