The paper focuses on the problems of grammatical skill formation using modern Internet-based technologies in English language training of aviation university students. The aim of the study is to examine online resources for English grammar training and give recommendations on their application. A brief overview of research designed to teach English grammar using Internet resources is presented. A description of various sites aimed at teaching English grammar is given, and the advantages of their use are considered. The paper provides guidelines on using Internet resources in combination with traditional teaching methods, with the advantages of their usage being also described. Internet is considered as a training tool of various grammar aspects at foreign language classes. It is proved that Internet-based English grammar training in correspondence with grammartranslation approach is more effective compared to the traditional one. The study was conducted at the St. Petersburg University of Civil Aviation, with 52 first and second year students taking part in the experiment. The experiment showed that students in the experimental group had increased motivation to learn English grammar; their level of grammar knowledge has improved. Thus, it has been shown that teaching English grammar using Internet technologies is more effective than traditional teaching.