In this article, the authors intended to give an overview of the use of the italian subjunctive with a special emphasis on the most frequent mistakes in expressing subjectivity and personal opinion as opposed to the objectivity expressed by the indicative. The main goal of the paper is to emphasize the key moment needed to distinguish these two grammatical voices and the prism through which a foreign speaker should observe the sentence in order to correctly use the subjunctive in speaking and writing. The authors wanted to place special emphasis on the most frequent mistakes in the use of the subjunctive in Italian language in general, especially the present subjunctive and the subjunctive imperfect, and despite the fact the subjunctive is increasingly being replaced by the indicative in the spoken language, such a trend should be taken with attention and insist on the regular use of Italian and the peculiarities that affect the richness of its linguistic expression. Therefore, in response to the tendencies present in the spoken language, the authors emphasize that the difference between the subjunctive and the indicative is of a semantic nature and that the use of subjunctive results in an essential difference in meaning compared to sentences written in the indicative, and any pseudo naturalness of the spoken language as opposed to grammatically correct one can lead to the impoverishment of the language corpus in the long run.