[Success key]

بالنسبة ليه : أتوقع انو ممكن يعود لسببين ,,
الأول: اختلاف صفات الحروف ف فيه منها القوي و فيه الضعيف فاذا كان في كلمة وحده حرفين متتالية يغلب الحرف القوي على الضعيف فيهمل ,,, سبب ضعيف
السبب الأقوى: انو اللغة الإنجيزية اعتمدت على لغات ثانية و من اشهرها اللاتينيه ,, فاقتبست منها الكلمات بنطقها و كتابتها ... و هذا سبب قوي

سبق ان قرأت مقال عن هذا الموضوع ... و هذا نصه ,,,,
Here are three reasons why English has so many silent letters:

Old English was 90% phonemic (words sound the same as they look). But from the beginning of the 15th century, we began to borrow words from other languages. Because grammar and usage rules are different in other languages, adopted words did not follow the rules of English pronunciation.

The English language 'borrowed' the Latin alphabet, and so we have only got 26 letters to represent around 41 different significant sounds. This means that we must attempt to use combinations of letters to represent sounds.

In the Middle English Period William Caxton brought the printing press to England. As time passed, pronunciation continued to change, but the printing press preserved the old spelling. That's why today we have words that end in a silent 'e', or have other silent letters in the middle, like 'might'. In fact, modern day English is only 40% phonemic.

So are there any rules and can they help us? Axel Wijk (Regularized English, 1959, Stockholm: Almqvist & Wiksells) came up with over 100 rules for English spelling. It is claimed that by using these rules, you can spell up to 85% of the words in English with 90% accuracy. But is this really helpful? Basically, no! It gets so complicated that a much easier approach is to memorize sight words.

So you can see that unfortunately there is no clear way to know about all the silent letters in English.