Iterrogative Sentence

• Interrogative article followed by a definite noun will end in dammah ( ُ )
• Interrogative article followed by a not definite noun will end in dammatin ( ٌ )
• Interrogative article followed by a preposition will remain on its own form.

Example:
1. أيْنَ المُدَرَّسُ؟

المُدَرَّسُ هو الطالب :))

المُدَرِّسُ = teacher
2. مِنْ فِي البَيْتِ؟

مَنْ فِي البَيْتِ؟
3. أ آمِنَةٌ فِي المَدْرَسِةِ؟

if you talk about known girl her name is (آمنة) you should say (أآمِنَةُ) because it is a proper noun. but if you mean (any girl with name (آمنة) is exists in school) then you can use tanween (dammatin)

4. ماذا عَلَى الكُرْسِيِ؟