كيف يتم تحويل passive الى active والعكس

Answer 1

لو أخدنا مثال فرضا ً
Right now, the letter is being written by Sarah.  ........passive
إذا بتحوله إلى أكتيف  
Right now, Sarah is writing the letter ........ Active.
مثال آخر
Once a week, the house is cleaned by Tom.........Passive
Once a week, Tom cleans the house............Active‏

Answer 2

الإجابة
أولاُ:نضع المفعول مكان الفاعل والفاعل مكان المفعول مسبوقاُ بكلمةby
ثانياُ:نصرف verb to be فى نفس زمن الجملة ثم نأتى بالتصريف الثالث للفعل
مثال:Ahmed wrote a letter.        actiive
التحويل:A letter was written by Ahmed.        passive‏

Answer 3

شكراً على سؤالك
1- somebody built this mosque in 1850
2- we make cheese from milk
3- they invited 40 people to the wedding party
4- they are building a big library here
active ولقد حولتها إلى passive هذه الجمل هي
1- This mosque has built in 1850
2- Cheese is made from milk
3- Fourty people have invited to the wedding party
4- A big library is being built here‏