When you meet لَمْ + imperfect, follow three steps.
1. Read the meaning as emphatic past negation.
2. Identify the imperfect's ending group.
3. Explain the visible result: sukun, removal of added nun, or no visible change.
Common mistake: removing every final nun. Only the added nun of the second group is removed; the nun of feminine plural in the third group remains.
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When you meet لَمْ + imperfect, follow three steps.
1. Read the meaning as emphatic past negation.
2. Identify the imperfect's ending group.
3. Explain the visible result: sukun, removal of added nun, or no visible change.
Common mistake: removing every final nun. Only the added nun of the second group is removed; the nun of feminine plural in the third group remains.