في العربية معظم الجذور مكون من ثلاثة حروف و كل معنى له صيغة ( وزن ) مثل كاتب للقائم بالكتابة على وزن فاعل و مكتوب للشيء المكتوب على وزن مفعول

Hi . How are you ? I hope very well . I'm Hisham from Egypt . I'm accountant at ministry of communications . I'd like to be friends It's pleasure to help you to practice and progress your Arabic My ID on skype Hisham_hmhbm I'm waiting for your reply sorry If I disturbed you

We have Arabic rules

This marked the derivation in the Arabic language has rules هذا علم الصرف باب الاشتقاق

Also by knowing what are the roots you should use in each tense