we don't use standard Arabic in our daily life when talking to the people,so we don't use kasra,damma..etc in the dialects.

well arabic is dialects which differ from country to country ( sometimes from city to city too!!) so in everyday life u can just learn the dialect of the country\people u'd speak too damma kasra and naho are things for official and standard language only

aaaah that clears it up a bit :)

No, they are not used, even when people speak standard arabic. It's not uncommon for news prodacstors and public speakers to omit these end-of-word vowels. You should note that Arabic Dialects are technically (from a linguistic point of view) different languages with different grammar rules. Egyptian arabic has بتاع to mean "of", Iraqi uses مال to mean "of", Syrian uses تبع to mean the same thing. But, these are optional, so the sentence: باب البيت الصغير Can still occur in dialects, the pronounciation will be radically different from standard arabic, for example: Syrian: baab ilbeet liz ghiir Egyptian: babil beet essughayar Iraqi: baab ilbeet liz ghayir The meaning is the same, and as you noticed it's ambiguous as it could have two meanings. So how do we distinguish? We don't. It's ambiguous. Mostly the meaning is deduced from the context. If the listener/reader knows the house has small entrance, he will interpret it as such. If the listener knows you're talking about two houses, one of them being small, then he will interpret the sentence as such. Of course it is possible to remove ambiguity by using the "of" construct, here's the example in Syrian: The small door of the house: الباب الصغير تبع البيت The door of the small house الباب تبع البيت الصغير Hope this helps. P.S. I just realized you used مدخل and I used باب in my answer. sorry :P too lazy to go back and fix them all.

As flora said, we don't use standard Arabic in our speech, each country has a dialect and they are similar in many Arab countries. There are very simple ways to differentiate, for example if I mean the gate is small: المدخل الصغير...بتاع البيت If I mean the house: مدخل البيت الصغير or you can clarify it after the statement as you said it... OR BETTER: just use the real word and make use of masculine and feminine and use: بوابة =gate So: بوابة البيت الصغير the house is small بوابة البيت الصغيرة the gate (feminine) is small :)