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كان وأخواتها

Past tense 'to be' (كان/كانت) and its sisters: subject stays nominative, predicate becomes accusative

Look at these examples. Can you spot the grammar pattern?

كان الطالبُ مجتهداً.

The student was hardworking.

كانت المدينةُ جميلةً.

The city was beautiful.

كنتُ تعبانًا.

I was tired.

كنّا سعداءَ.

We were happy.

Pay attention to the highlighted parts. What do they have in common?

كان وأخواتها — Kāna and Its Sisters

كان (was/were) enters a nominal sentence and changes the predicate to accusative. The subject stays nominative.

FormUsage
كانَhe was
كانَتshe was
كُنتُI was
كُنّاwe were

Pattern: كان + subject (مرفوع) + predicate (منصوب). Compare: الطالبُ مجتهدٌ (nominal) → كان الطالبُ مجتهداً (with كان — predicate gets tanween fatha).

Learners forget to put the predicate in accusative after كان, keeping it nominative (كان الطالبُ مجتهدٌ instead of مجتهداً). English speakers: English "was" doesn't change anything grammatically. In Arabic, كان changes the case of the predicate. Russian speakers: Russian быть is rarely used in present tense. Arabic كان is obligatory for past tense and changes noun endings. Czech speakers: Czech byl/byla is straightforward. Arabic كان additionally requires the accusative case on the predicate.

كان الطالبُ مجتهداً.

The student was hardworking.

كان makes الطالب the subject (nominative) and مجتهداً the predicate (accusative — note the tanween fatha اً).

كانت المدينةُ جميلةً.

The city was beautiful.

كانت (feminine form) because المدينة is feminine. جميلةً is accusative (tanween fatha on taa marbuuta).

كنتُ تعبانًا.

I was tired.

كُنتُ = I was. The subject pronoun is embedded in the verb. تعبانًا is accusative.

كنّا سعداءَ.

We were happy.

كنّا = we were. سعداءَ (happy, plural) is accusative — broken plural with fatha ending.

Practice in course

Apply this grammar in A1 course exercises

A1 Course
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