Yapacakları - (n)- ı -n : combining consonant, it helps combining two vowels. -ı (the indication form of the noun. Here the noun is "yapacakları". Remember, the first -ı was to make a noun. If you add one these suffixes again(ı,i,u,ü) you indicate the noun. it's like point out sth. Like, "beni, onu, onları, etc.") i know your brain is burning. haha but keep readin pls For example: Bunu "yapacaklarını" biliyorum. I know "that they will do" this. here as you can see it is an object with apparent indication. woah. I've never tried to teach turkish to someone. I'm shocked. I never knew my language was that hard. Btw, all the terms here belongs to me, they are not grammatical terms what i am trying to say. whatever, i know you won't understand any of the words :D :D I hope i didnt make you more confused o.O

Yapacaklarını yap- do/make acak=future suffix yapacak-> will do/make lar - *they* who are doing the action yapacaklar->they will make I really dont know how to tell you this, but I'll try. ●Yapacaklar-ı When you add it, you change the verb into an objective or an subject. yapacakları= what they will make For example: Subject Yapacakları uyumak. -> What they will do is to sleep. For example: Object Ne yapacakları bilinmiyor. ->What they will do is not known. By adding this suffix, you can also change the verb into some kind of adjective. but this time it is followed by a noun. Yapacakları iş = The job that they will do For example: (Onların) Yapacakları iş uyumak. ->The job that they will do is to sleep. Wow! Amazing.

They need to make a plan for what they will do there