Grammatical Case of Dual Nouns

Read the bilingual lesson for Grammatical Case of Dual Nouns and test your understanding with a focused quiz.

Lesson

1. What Will We Learn in This Level?

● In this section, we will study the grammatical cases of the dual, the noun form that refers to two things or persons. ● We will learn the nominative, accusative, and genitive markers of dual nouns. ● We will learn how a singular noun changes into the case forms of the dual. ● We will write the case forms of all fifteen nouns in the exercise and apply the rule in practice.

2. Case-Ending Rule for the Dual

● The case of a dual noun is not shown by vowel marks such as fatḥah, kasrah, and ḍammah, as with singular nouns. It is shown by changing the final letters and sounds: ○ nominative: ends in ـَانِ (alif preceded by fatḥah and nūn with kasrah), as in رَجُلَانِ (two men). ○ accusative and genitive: end in ـَيْنِ (a letter with fatḥah, sākin yāʾ, and nūn with kasrah), as in رَجُلَيْنِ. ● Important point: The accusative and genitive dual forms are exactly the same in form and sound.

3. Case Comparison: Singular to Dual

● Compare the three cases of a singular noun with the dual forms: Case Singular Dual Nominative رَجُلٌ رَجُلَانِ (with alif and nūn) Accusative رَجُلًا رَجُلَيْنِ (with yāʾ and nūn) Genitive رَجُلٍ رَجُلَيْنِ (with yāʾ and nūn) ● In the dual, the endings ـَانِ and ـَيْنِ take the place of the singular vowel marks.

4. Case Changes of Feminine Dual Nouns

● Feminine nouns ending in round tāʾ (ة) change as follows: ○ Change the round tāʾ to a long tāʾ (ت), then attach the case ending. ● Examples: ○ اِمْرَأَةٌ (one woman) → اِمْرَأَتَانِ (nominative) → اِمْرَأَتَيْنِ (accusative/genitive). ○ بِنْتٌ (one girl) → بِنْتَانِ (nominative) → بِنْتَيْنِ (accusative/genitive).

5. Case Chart for Dual Nouns (Part One)

● Learn the nominative, accusative, and genitive forms of these dual nouns: Nominative Accusative Genitive مُسْلِمَانِ مُسْلِمَيْنِ مُسْلِمَيْنِ كَافِرَانِ كَافِرَيْنِ كَافِرَيْنِ مُؤْمِنَانِ مُؤْمِنَيْنِ مُؤْمِنَيْنِ مُنَافِقَانِ مُنَافِقَيْنِ مُنَافِقَيْنِ كِتَابَانِ كِتَابَيْنِ كِتَابَيْنِ قَلَمَانِ قَلَمَيْنِ قَلَمَيْنِ كُرْسِيَّانِ كُرْسِيَّيْنِ كُرْسِيَّيْنِ اِمْرَأَتَانِ اِمْرَأَتَيْنِ اِمْرَأَتَيْنِ

6. Case Chart for Dual Nouns (Part Two)

● Learn the nominative, accusative, and genitive forms of these dual nouns: Nominative Accusative Genitive أُخْتَانِ أُخْتَيْنِ أُخْتَيْنِ عَابِدَتَانِ عَابِدَتَيْنِ عَابِدَتَيْنِ عَيْنَانِ عَيْنَيْنِ عَيْنَيْنِ شَفَتَانِ (two lips) شَفَتَيْنِ شَفَتَيْنِ رَجُلَانِ رَجُلَيْنِ رَجُلَيْنِ يَدَانِ يَدَيْنِ يَدَيْنِ أُذُنَانِ أُذُنَيْنِ أُذُنَيْنِ

7. Level Summary

● In Arabic, a noun referring to two things is called the dual. ● The dual's grammatical case is recognized by its final letters and sounds. ● In the nominative, the final sound is ـَانِ. ● In the accusative and genitive, the shared final sound is ـَيْنِ.

Practice questions

Question 1

How is the grammatical case of a dual noun shown?

  • By changing the final letters and sounds, such as adding alif or yāʾ
  • Only by placing fatḥah, kasrah, or ḍammah on the final letter
  • By adding alif and lām at the beginning of the word

Question 2

Match the following dual endings with their correct grammatical cases:

Question 3

What is the correct accusative form of كِتَابَانِ (two books)?

  • كِتَابَيْنِ
  • كِتَابُونَ
  • كِتَابَاتٍ

Question 4

The accusative and genitive forms of dual nouns are completely different in form and case ending.

  • True
  • False

Question 5

Sort the following dual nouns into the correct grammatical-case groups:

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