A sentence, main element of which is predicate, is a word or a set of words that conveys a statement, question, exclamation, or command. The predicate can be a conjugated verb or a noun used with a copulative verb. The meaning of the predicate is supported by the other elements in the sentence. The number of words or phrases may change in terms of need. Texts are made by putting these syntactic units successively. While making texts, sentences are either stopped by punctuation marks that express ending or they are connected to each other by several morphemes or punctuation marks depending on the relations between them. In syntax studies, conjunctions are the most common units that are given to connect sentences. However, the gerund suffixes -(y)Ip, -(y)ArAK and –ken have the function of connecting sentences as well as making gerunds. This function of these suffixes are not, or partially, mentioned in the syntactic research. In the sentence “Otel icin rezervasyon yaptirirken bazi konulara dikkat etmeliyiz.”, the clause “Otel icin rezervasyon yaptirirken” is the adverb of the predicate “dikkat etmeliyiz”. On the other hand, in the sentence “Kiz cocuklari surekli diyet yaparken erkek cocuklari her istedigini yiyor.” , the clause “Kiz cocuklari surekli diyet yaparken” is not the adverb of the predicate “yiyor”. This is, indeed, the compound form of two sentences with –ken “ Kiz cocuklari surekli diyet yapiyor ama erkek cocuklari her istedigini yiyor.” The adverbial suffixes-(y)Ip, -(y)ArAK can also be used as sentence connectors. The aim of this article is to draw attention to these functions of the suffixes in question and to that their functions should be evaluated in terms of syntax.