By now, we know how to get 29 different verbs from one basic or root word given. Moving on...
Step 1: add letter alif, ا to the first letter
إِسْمُ الفَاعِل - The Doer
In English, we have the verb derived into noun in these form:
to write (verb) >> writer (person)
to read (verb) >> reader (person)
Similar concept applies in Arabic as well. For 3 letters verb, the scale to follow is from the verb he did, فَعَلَ . Observe the pattern of the derivation in the image,
From here, the rule that we can deduce to change a verb to a person (for 3 letters only):
Step 2: 2nd letter has to be a kasrah in harakah, retain or change the 2nd letter to kasrah
Step 3: The last letter will have a dhommatun as its harakah
to make the noun female, add ة (ta marbutah) at the last letter
ضَرَبَ >> ضَارِبٌ >> ضَارِبَةٌ
The Giver (female) The Giver (male) He gave
فَتَحَ >> فَاتِحٌ >> فَاتِحَةٌ
The Opener (f) The Opener (m) He opened
Special verb - نَاْمَ , he slept
For this one, we need to add a house for the letter alif, as alif alone cannot house a kasrah ...
If we break down the verb نَاْمَ , we will get نَ , ا, م. Following the steps/rules, we have to add alif to نَ, make ا alif kasrah ...
نَاْمَ >> نَائِمٌ قَالَ >> قَائِلٌ
أكَلَ >> آكِل دَرَسَ >> دَارِسٌ
Making verb into person (doer) from root word with > 3 letters
Step 1: Find the مُضَارِع form of the verb
Step 2: Change the letter ي to م
Root word , أَسْلَمَ , means to surrender/he surrendered
Checking the dictionary (or ask the teacher :)) to get the مُضَارِع tense for أَسْلَمَ.
(أَسْلَمَ (ماضِي) - يُسْلِمُ (مُضَارِع
to make the doer female, just add ةٌ (ta marbuthoh) to the last letter. مُسْلِمٌ is for male and مُسْلِمَةٌ for female.
More examples :
sorry ... there is a missing dot on the letter ف in the word فاعل