When to use: i. -ış, -iş, -uş, -üş ii. -me, -ma iii. -mek, -mak
According to the notes at https://www.duolingo.com/skill/tr/Gerunds
"The first groups are mostly gerunds and the last one is mostly infinitives. But the one in the middle can be used as both gerunds and infinitives depending on the sentence. Unfortunately there are no distinct rules to select the correct suffix for making a gerund or infinitive, it all depends on experience."
1) Does the first sentence mean:
a) "The first groups are mostly translated to gerunds and the last one is mostly translated to infinitives."
b) does the word gerund mean the definition in Wikipedia: "As applied to Turkish, it refers to a large number of verb endings subject to vowel harmony and sometimes used in conjunction with postpositions. Turkish gerunds may act as an adverb or constitute a part of an (adverbial) clause."? If so I cannot understand the meaning of the sentence:can anyone else?
2) As "it all depends on experience" could the examples at http://tr.wikipedia.org/wiki/Zarf-fiil be translated and added? If they are not suitable could some other examples be added so we can gain experience?
All of the examples given in the Wikipedia page in English about gerunds would be translated using nominal verbs (I'm not sure if this is how it is called.), the suffixes: -mA, Iş and -mAk. Zarf-fiil is used to make relative clauses. I cannot browse the duo page about gerunds but i think it is about these nominal verbs. Adverbial clauses are completely different.
a) is the correct one.
It simply means: Usually you translate the first group with the "-ing" in English, and the last group with the "to + verb". The second group can be translated either way depending on the context.
That's how I understand it.