Al-Jazeera offers a grammar test. There are a couple of pitfalls. So, reason enough to take a look at the most important Arabic grammar topics.
Nunation (تنوين) in Arabic is used when there is no definite article ال. But that is only half of the truth. The idea is much deeper.
Nunation (تنوين) can tell you something about the character and personality of a word. It is a deep idea developed by the first Arab grammarians.
Some letters can lead you in the wrong direction when trying to figure out the Arabic root. Some tricky examples.
Numbers in the Arabic language are like solving mathematical equations. But there is good news: a new online tool - which is of great help to learn the rules: arabic.ba
Masameer is a Saudi Arabian animation film which is now available on Netflix! It uses Gulf Arabic and Fosha - and has pretty decent English subtitles.
The Arabic broken plural has the effect that scholars still debate how to properly classify the several branches of Semitic languages.
Episode #4 of my series "9273 roots": 20 questions for Hanada Taha Thomure who develops standards to measure text levels in Arabic.