A Hundred and One Rules in Arabic Grammar!
- Idaafa الاضافة ===================
The Idaafa structure is usually made of two or more nouns that are semantically related and in a sequence. Sometimes it sounds like a sort of "possessive" relationship, where English could use "of" or "'s" .The first term of the Idaafa might be in any case andshould not take Nunation or a definite article. The Second term of the Idaafa, on the other hand, is always in the genitive case and may take Nunation or a definite article.
the language professor:
**استاذ ُ اللغةِ ، استاذ َ اللغةِ ، استاذِ اللغةِ**
** a language professor: **
**استاذ ُ لغةٍ ، استاذ َ لغةٍ ، استاذ ِ لغةٍ**
If you encounter a cluster of nouns, then you should try to find out if it is an Idaafa structure.