You now know how to say what something was (كَانَ). This chapter completes the set with what something is not. لَيْسَ looks like a past-tense verb, but it always has present meaning — and it works exactly like كَانَ, pushing the khabar into the accusative.
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BY THE END OF THIS CHAPTER YOU WILL BE ABLE TO
Negate a nominal sentence with لَيْسَ
Conjugate لَيْسَ for he, she, and I
Tell the difference between لَا (general negation) and لَيْسَ (negating ‘to be’)
Read a verse that uses لَيْسَ to correct a misunderstanding
TEACHER NOTES
Pacing: 40–50 min
Prerequisite check: Kāna/qāla from Chapter Fifteen for contrast.
Watch out for: لَيْسَ negates nominal sentences only — a common student error is trying to use it on verbs.
01 — LISTEN & REPEAT
حِوَارٌDialogue
Yūsuf corrects a misunderstanding. Listen twice, then read aloud.
MARYAM
هَلْ هَذَا الرَّجُلُ أَخُوكَ؟
hal hādhā-r-rajulu akhūk?
Is this man your brother?
YŪSUF
لَا، لَيْسَ أَخِي، هُوَ صَدِيقِي.
lā, laysa akhī, huwa ṣadīqī.
No, he's not my brother, he's my friend.
MARYAM
وَهَلِ الِامْتِحَانُ صَعْبٌ؟
wa hal-l-imtiḥānu ṣa‘b?
And is the exam hard?
YŪSUF
لَيْسَ صَعْبًا، هُوَ سَهْلٌ إِنْ ذَاكَرْتِ.
laysa ṣa‘ban, huwa sahlun in dhākart.
It's not hard, it's easy if you study.
MARYAM
الْحَمْدُ لِلَّهِ، لَسْتُ خَائِفَةً إِذًا.
al-ḥamdu lillāh, lastu khā’ifatan idhan.
Praise be to Allah, I'm not afraid, then.
02 — CORE WORDS
الْمُفْرَدَاتُVocabulary
لَيْسَ conjugates like a past-tense verb but always means present-tense ‘is not.’
Arabic
Says
Meaning
Note
NEWلَيْسَ
laysa
he is not
—
NEWلَيْسَتْ
laysat
she is not
—
NEWلَسْتُ
lastu
I am not
—
REVIEWلَسْتَ/لَسْتِ
lasta / lasti
you (m./f.) are not
—
NEWصَعْبٌ/سَهْلٌ
ṣa‘b / sahl
difficult / easy
—
NEWخَائِفٌ/خَائِفَةٌ
khā’if / khā’ifah
afraid (m./f.)
—
NEWامْتِحَانٌ
imtiḥān
an exam
—
NEWإِذًا
idhan
then, in that case
—
Also in this chapter's dialogue and reading.
Arabic
Says
Meaning
Note
EARLYالنَّاسُ
an-nās
the people
Extremely common — worth fixing solidly.
EARLYذَاكَرَ / ذَاكَرْتُ
dhākara / dhākartu
to study, revise / I studied
The verb every student needs.
EARLYمُتَأَكِّدٌ
muta’akkid
certain, sure
أَنَا مُتَأَكِّدٌ, "I'm sure."
EARLYكَمَا
kamā
just as, like
—
EARLYمُسَاعَدَةٌ
musā‘adah
help, assistance
—
EARLYالْأَمْرُ
al-amr
the matter, the situation
—
EARLYالْحَقِيقِيُّ
al-ḥaqīqī
real, genuine
—
03 — HOW THE LANGUAGE WORKS
رُكْنُ الْقَوَاعِدِGrammar Corner
Laysa negates “is.” Just like كَانَ, لَيْسَ pushes the khabar of a nominal sentence into the accusative — but instead of describing the past, it denies the present.
هُوَ أَخِي
huwa akhī He is my brother. (ordinary nominal sentence)
لَيْسَ أَخِي
laysa akhī He is not my brother.
الِامْتِحَانُ لَيْسَ صَعْبًا
al-imtiḥānu laysa ṣa‘ban The exam is not hard.
Don't confuse لَيْسَ with لَا: لَا negates verbs generally (لَا أَعْرِفُ, “I don't know”), while لَيْسَ specifically negates a nominal, verbless “is” sentence.
Quick check: why does صَعْبًا end in ‑an in “لَيْسَ الِامْتِحَانُ صَعْبًا”? (It's the khabar of laysa, which — like kāna — takes the accusative.)
04 — READING THE SOURCE
وَقْفَةٌ قُرْآنِيَّةٌQur'ān Connection
A short, clear verse that uses لَيْسَ to correct a common misunderstanding about righteousness.
SŪRAT AL-BAQARAH — 2:177 (EXCERPT)
لَيْسَ الْبِرَّ أَنْ تُوَلُّوا وُجُوهَكُمْ
Righteousness is not that you turn your faces...
لَيْسَ
laysa
[it] is not
الْبِرَّ
al-birra
righteousness (khabar, accusative)
أَنْ تُوَلُّوا وُجُوهَكُمْ
an tuwallū wujūhakum
that you turn your faces
الْبِرَّ takes the accusative ending because it's the khabar of لَيْسَ — exactly this chapter's grammar box. The verse continues to explain what righteousness truly is: faith, charity, prayer, and honesty.
05 — SAY IT LIKE A NATIVE
عِبَارَاتٌ يَوْمِيَّةٌEveryday Phrases
Common expressions using لَيْسَ.
لَيْسَ لِي حِيلَةٌ
laysa lī ḥīlah — I have no way around it
لَيْسَ الْأَمْرُ كَذَلِكَ
laysa-l-amru ka-dhālik — it's not like that
لَسْتُ مُتَأَكِّدًا
lastu muta’akkidan — I'm not sure
لَيْسَ هُنَاكَ دَاعٍ
laysa hunāka dā‘in — there's no need
لَيْسَ مُهِمًّا
laysa muhimman — it's not important, never mind
لَيْسَ بَعِيدًا
laysa ba‘īdan — it's not far
لَيْسَ سِرًّا
laysa sirran — it's no secret
لَيْسَ الْآنَ
laysa-l-ān — not now
SKILLS PRACTICE
الِاسْتِمَاعُListening
Audio track 15.1
Salmā reassures Aḥmad before a test. Listen first, script second.
1. False — he says the man is his friend, not his brother. 2. True. 3. False — she says she's not afraid.
SKILLS PRACTICE
قِرَاءَةٌ حُرَّةٌFree Reading
Hover to check — no test, just read
A short passage using only words you've met so far. Just read for meaning — hover any word if you get stuck. Flip the switch to check whole sentences instead of single words.