Purpose clauses (كي / لكي)

Expressing Purpose with كي and لكي

To explain why an action happens, English uses phrases like "in order to" or "so that." In Arabic, we use the particles كي or لكي. They mean the exact same thing and are used interchangeably.

When these particles are followed by a present tense verb, they put the verb into the subjunctive mood. For standard singular verbs, this means the verb's final short vowel changes from its usual damma (the "u" sound) to a fatha (the "a" sound).

Dropping the "Noon" for Plurals and Duals

If a present tense verb normally ends in the letter ن (such as the plural "they" or the dual "the two of them"), the subjunctive mood requires you to drop that ن.

For the masculine plural, the standard ending ـون becomes ـوا (a silent Alif is added after the Waw when the ن drops).

Similarly, the dual forms simply drop the ن at the end, so ـان becomes ـا.

The Feminine Plural Exception

There is one important exception to the dropped-ن rule. The feminine plural ending (the ن for a group of women) is a permanent pronoun that cannot be removed.

When a feminine plural verb follows كي or لكي, it keeps its ن and looks exactly the same as it does in the regular present tense.

Seeing the endings

This course writes Arabic the way books and newspapers print it, without the short-vowel marks, so the ending this lesson is about is something you hear in the audio but never see in the drills. Here are some of them with every vowel written out:

presentafter كي / لكي
تُسَاعِدُلِكَيْ تُسَاعِدَ الأَيْتَامَ
يَأْكُلُلِكَيْ يَأْكُلَ المُسِنُّونَ
يُسَاهِمُونَلِكَيْ يُسَاهِمُوا فِي هَذِهِ المُبَادَرَةِ

كي and لكي work exactly like أن: the verb after them is subjunctive, so -u becomes -a and the plural ن drops. The feminine plural never changes: هُنَّ يُسَاهِمْنَ … كَيْ يَنْشُرْنَ.

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