كَمْ وَلَدًا فِي الصَّفِّ؟
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How many boys are in the class?وَلَدًا is singular, indefinite and accusative.
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The question is plural in meaning but singular in grammar
كَمْ asks for a number, while the following counted noun identifies the category in a fixed singular accusative form.
كَمْ سَيَّارَةً رَأَيْتَ؟
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How many cars did you see?Feminine singular سَيَّارَةً, not the plural سَيَّارَات.
كَمْ كِتَابًا جَدِيدًا اشْتَرَيْتِ؟
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How many new books did you buy?The adjective follows the singular accusative counted noun.
كَمْ مَرَّةً تَتَدَرَّبُ فِي الْأُسْبُوعِ؟
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How many times do you train each week?مَرَّةً is a high-frequency counted noun.
Cambridge relevance: the rule appears in practical questions about people, items, days, hours, visits and frequency, and it is easy to check accurately in writing.
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Choose your route
Secure the fixed noun form, then add spelling, modifiers and response patterns.
Core
- Use كَمْ + singular noun.
- Make the noun indefinite accusative.
- Use common forms such as كَمْ كِتَابًا and كَمْ مَرَّةً.
Develop
- Spell tanwīn fatḥ and its supporting alif accurately.
- Add a matching adjective.
- Distinguish counted-noun questions from fixed questions such as كَمْ عُمْرُكَ؟
Stretch
- Use كَمْ across tenses and complex sentences.
- Form natural survey and data questions.
- Edit both question and answer without mixing the two number systems.
D
Starter diagnostic
Choose the noun form that follows interrogative كَمْ.
🔎 كَمْ Starter
0/61. Choose “How many boys?”
The counted noun is singular, indefinite and accusative.
2. Choose “How many cars?”
Use singular سَيَّارَةً, not a plural.
3. Which ending is required on a regular counted noun?
The distinguishing counted noun after interrogative كَمْ is accusative.
4. Which word is correctly spelled with the supporting alif?
A regular noun such as كِتَاب takes an alif with tanwīn fatḥ.
5. Which feminine form is correct?
Do not add a second alif after tāʾ marbūṭa.
6. Choose the adjective pair.
The adjective agrees with the singular accusative noun.
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The core formula
Treat the phrase as one dependable pattern before adding more complex number rules.
Formula: كَمْ + اِسْمٌ مُفْرَدٌ نَكِرَةٌ مَنْصُوبٌ
| Meaning | Correct question phrase | Not this |
|---|---|---|
| how many students | كَمْ طَالِبًا | كَمْ طُلَّابٍ |
| how many girls | كَمْ بِنْتًا | كَمْ بَنَاتٍ |
| how many schools | كَمْ مَدْرَسَةً | كَمْ مَدَارِسَ |
| how many days | كَمْ يَوْمًا | كَمْ أَيَّامٍ |
| how many times | كَمْ مَرَّةً | كَمْ مَرَّاتٍ |
Memory phrase: the number is unknown, so the category noun appears once—in the singular—after كَمْ.
✅ Mini-check: singular accusative
0/41. Choose “How many lessons?”
Use the singular accusative دَرْسًا.
2. Choose “How many female teachers?”
Use singular feminine مُعَلِّمَةً.
3. Choose “How many hours?”
Use singular سَاعَةً.
4. Which description is accurate?
These three properties form the core rule.
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Tanwīn fatḥ spelling
The accusative sound is consistent, but the written supporting alif depends on the noun ending.
| Noun type | Correct form | Spelling note |
|---|---|---|
| Regular consonant ending | كِتَابًا، قَلَمًا، يَوْمًا | Add the supporting alif. |
| Tāʾ marbūṭa | سَيَّارَةً، مَدْرَسَةً، مَرَّةً | No additional alif after ة. |
| Hamza after alif | مَاءً | No extra alif is added. |
Common visual error: سَيَّارَةًا is incorrect. The tāʾ marbūṭa already provides the written support for tanwīn fatḥ.
✅ Mini-check: spelling
0/41. Choose the correct form after كَمْ.
Regular قَلَم takes a supporting alif.
2. Choose the correct feminine form.
No extra alif follows tāʾ marbūṭa.
3. Choose the correct form of “water” in the pattern.
The spelling is مَاءً without an extra alif.
4. Which question is fully accurate?
يَوْمًا is singular accusative with the supporting alif.
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Add adjectives and other modifiers
Any adjective describing the counted noun follows its singular accusative form.
كَمْ كِتَابًا جَدِيدًا اشْتَرَيْتَ؟
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How many new books did you buy?Masculine singular accusative noun and adjective.
كَمْ سَيَّارَةً سَرِيعَةً رَأَيْتِ؟
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How many fast cars did you see?Feminine singular accusative noun and adjective.
Important: the answer may use a normal number expression with different noun rules. Do not copy the question’s singular accusative form mechanically into the answer.
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High-frequency كَمْ questions
Some practical questions use a counted noun; others are fixed possession, age, price or time expressions.
| Purpose | Question | Note |
|---|---|---|
| Number of people/items | كَمْ طَالِبًا فِي الصَّفِّ؟ | Core singular accusative rule |
| Frequency | كَمْ مَرَّةً تَتَدَرَّبُ؟ | مَرَّةً is counted |
| Duration | كَمْ يَوْمًا بَقِيتَ؟ | يَوْمًا is counted |
| Age | كَمْ عُمْرُكَ؟ | Fixed possession-style question; no counted noun follows immediately |
| Price | كَمْ ثَمَنُ هَذَا؟ / بِكَمْ هَذَا؟ | Ask the price rather than forcing a counted noun |
Do not overapply one rule: the singular accusative rule governs the distinguishing counted noun after interrogative كَمْ. Fixed expressions such as كَمْ عُمْرُكَ؟ have their own structure.
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Answering كَمْ questions
The question tests كَمْ structure; the answer uses an appropriate number expression.
Question
كَمْ كِتَابًا قَرَأْتَ؟
Answer
قَرَأْتُ ثَلَاثَةَ كُتُبٍ.
The answer follows ordinary number–noun rules, not the كَمْ counted-noun form.
Question
كَمْ مَرَّةً تَسْبَحِينَ فِي الْأُسْبُوعِ؟
Answer
أَسْبَحُ مَرَّتَيْنِ فِي الْأُسْبُوعِ.
The answer uses the dual frequency expression.
Speaking strategy: answer the number, then add a time, reason or comparison so the response demonstrates wider language control.
8
Misconception clinic
Repair plural nouns, definiteness, case and tanwīn spelling.
✓ كَمْ كِتَابًا؟
✓ كَمْ كِتَابًا؟
The counted noun is indefinite.
✓ كَمْ سَيَّارَةً؟
✓ كَمْ كِتَابًا جَدِيدًا؟
🛠 Repair lab
0/41. Repair كَمْ طُلَّابٍ فِي الصَّفِّ؟
Replace the plural with singular indefinite accusative.
2. Repair كَمْ مَدْرَسَةًا فِي الْمَدِينَةِ؟
No additional alif follows tāʾ marbūṭa.
3. Repair كَمْ كِتَابًا مُفِيدٌ قَرَأْتَ؟
The adjective agrees with the singular accusative noun.
4. Which is a fixed age question?
كَمْ عُمْرُكِ؟ is the standard practical pattern.
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كَمْ repair game
Choose the singular accusative form and accurate spelling.
🎮 How Many? Repair
Repair number questions before time runs out.
Press Start.
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Four-skills application
Use كَمْ to collect, understand and report quantities.
Listening: survey totals
Listen to a partner read five كَمْ questions and answers. Record the counted category and number, then check whether the question noun was singular accusative.
Reading: class survey
كَمْ طَالِبًا يَمْشِي إِلَى الْمَدْرَسَةِ؟ كَمْ طَالِبَةً تَرْكَبُ الْحَافِلَةَ؟ كَمْ مَرَّةً يُمَارِسُونَ الرِّيَاضَةَ؟
Identify the category, tense and counted noun in each question.
Speaking questionnaire
Ask about books, siblings, school subjects, weekly activities, journeys and screen time. Extend every answer.
Data report
Convert answers into statements using ordinary number–noun patterns. Check that the answer does not simply repeat the question form.
Create a class or family survey
Write eight كَمْ questions, collect or invent answers, then write a short report comparing the results.
Success checklist: Use eight singular accusative counted nouns, two feminine nouns, two adjectives, one duration question, one frequency question, one fixed age/price question and accurate answer-side number phrases.
Not yet marked complete.
M
Final mastery check
Show that you can apply the singular accusative rule and recognise its limits.
🏁 كَمْ Mastery
0/101. Complete the rule: كَمْ + ...
The counted noun after interrogative كَمْ is singular, indefinite and accusative.
2. Choose “How many boys?”
Use singular accusative وَلَدًا.
3. Choose “How many schools?”
Use singular مَدْرَسَةً with no extra alif.
4. Choose the correctly spelled regular noun.
Regular قَلَم takes a supporting alif with tanwīn fatḥ.
5. Choose the correct adjective agreement.
The adjective copies the singular accusative noun.
6. Choose the frequency question.
مَرَّةً follows the core rule.
7. Which is the fixed age question?
كَمْ عُمْرُكَ؟ uses a possession-style nominal structure.
8. Which answer correctly changes to ordinary number grammar?
The answer uses the appropriate number–noun rule rather than repeating كَمْ structure.
9. Choose the natural quantity question.
Count a natural unit such as cups.
10. Best proofreading sequence?
The sequence checks every part of the Cambridge rule.
You can now
- Use كَمْ with a singular indefinite accusative counted noun.
- Spell tanwīn fatḥ with or without a supporting alif.
- Add matching singular accusative adjectives.
- Use high-frequency frequency and duration questions.
- Recognise fixed age and price questions.
- Answer with appropriate ordinary number grammar.
Spaced revisit: audit every كَمْ question in a previous worksheet or lesson and repair the counted noun form.