The Arabic parts of speech are three in number: Noun ( ٌاِسْم) Verb (ٌفِعْل) and Particle (ٌحَرْف) The pronouns, the relative pronouns, and the demonstrative pronouns are all known as ٌاِسْم in the Arabic language.
A typical Arabic sentence may be formed by one or two or the three elements together.
For example, the word قُمْ which means “stand up” (you) is a verb (ٌفِعْل) which singly forms an imperative sentence.
In another example, الْمُدَرِّسُ جَالِسٌ which means the teacher is sitting) is a sentence formed from two words. Both the first and second words are nouns. The first word is called مُبْتَدَأ (subject) while the second word (the news) is called خَبَرٌ and they both formed a nominal sentence (جُمْلَةٌ اسْمِيَّةٌ )
In this third example: َكَتَبَ مُحَمَّدٌ الْقِصَّة (Muhammad wrote a story) the first word (كَتَبَ) is a verb while the second (مُحَمَّدٌ) is a noun and the third ( القَّصَّةُ) is also a noun. This type of sentence is called a verbal sentence ( جُمْلَةٌ فِعْلِيَّةٌ): the actor (فَاعِلٌ) is Muhammad while the object (مَفْعُول بِه) is the story.
Here are more examples: