Learn Turkish: Yeni altyapı gelecek ay kullanılacak. - The new infrastructure will be used next month.

The base verb is kullanmak (to use). To make it passive, we take the stem kullan-. Because it ends in a consonant other than L, we add the passive suffix -ıl (following vowel harmony) to make kullanıl- (to be used). Finally, we add the future tense suffix -acak to get kullanılacak (will be used).

What are the roots of the word altyapı?

Altyapı is a compound noun made of two simpler words. Alt means "bottom" or "under," and yapı means "structure" or "building" (from the verb yapmak). Put them together and you literally get "under-structure," which is the exact equivalent of "infrastructure."

Is gelecek the standard way to say "next" for time expressions like months and years?

Yes! Gelecek literally means "that which will come" (it is the future form of gelmek). When placed in front of time words like ay (month), yıl (year), or hafta (week), it means "next." So gelecek ay is simply "next month."

If I wanted to specify who will use the infrastructure (e.g., "by the team"), how do I add that to this passive sentence?