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.
This three-part series of articles is designed to get the trouble out of the way once and for all. Part one is about the basics.
The word ما is one of the most difficult words in Egyptian Arabic (and by the way, in Standard Arabic as well). Oftentimes, it is misunderstood.
What's the function of وَ in the saying: كُلُّ عامٍ وَأَنْتُمْ بِخَيْرٍ? It is a dubious one. Most grammarians say that you don't need the وَ and that it would be of better Arabic style to skip it! Let's see why.
Reading grammar books in Arabic can be challenging if you cannot decode the language of the grammarians (i'rab إعراب). But there is a formula.
The question of the wasp or hornet - Masʾalat al-Zunbur (مَسْأَلة الزُّنْبُور) - caused Sibawayhi, the most famous Arabic grammarian, to die of anger.
The Arabic word إذا (idha) is very tricky. Sometimes it is written without an Aleph - the spelling matters.