Rule 1: 2. The tenses of narrative: a review
A story in Arabic is carried by the perfect (وَصَلْنَا، رَبَطْتُ، دَخَلْتُ). Description of the scene behind the events uses كَانَ with the imperfect (continuous or habitual past) or with a noun predicate. An action completed before another past action takes كَانَ قَدْ + perfect (pluperfect), or simply قَدْ + perfect after أَنَّ and إِنَّ in reported speech. The negative of the narrative perfect is لَمْ + jussive. The future seen from the past is سَـ or سَوْفَ inside reported speech.
وَصَلْنَا إِلَى السُّوقِ قُبَيْلَ الظُّهْرِ.
waṣalnā ilā s-sūqi qubayla ẓ-ẓuhri.
We reached the market shortly before noon.
Perfect: an event.
كَانَ التُّجَّارُ يَصِيحُونَ فِي كُلِّ مَكَانٍ.
kāna t-tujjāru yaṣīḥūna fī kulli makānin.
The merchants were shouting everywhere.
كَانَ + imperfect: background.
عَلِمْتُ أَنَّهُ قَدْ دَفَعَ الْمَالَ إِلَى التَّاجِرِ.
ʿalimtu annahu qad dafaʿa l-māla ilā t-tājiri.
I learned that he had paid the money to the merchant.
قَدْ + perfect after أَنَّ: an earlier action.
كَانَ الْحِمَارُ قَدْ مَاتَ قَبْلَ وُصُولِي.
kāna l-ḥimāru qad māta qabla wuṣūlī.
The donkey had died before my arrival.
كَانَ قَدْ + perfect: pluperfect.
لَمْ يَسْأَلْنِي أَحَدٌ عَنِ الْفَلَّاحِ.
lam yasʾalnī aḥadun ʿani l-fallāḥi.
Nobody asked me about the peasant.
لَمْ + jussive: the negative past.