We argue that corpus linguistics should be used as a tool for teaching students a second foreign language. The researchers focus on the study of English loanwords in French and Italian. We propose a new approach to teaching a second foreign language to students who are fluent in English as a first foreign language. We emphasize the importance of concordance in linguistics and teaching a second foreign language. We analyze the works of the methodologists who suggest using corpus technologies in the language classroom to develop students’ lexical skills. We touch upon the characteristics of corpus technologies, define the term “loanwords” and refer to the concept of “English borrowings”. The researchers analyze the role of English loanwords in French and Italian, and identify the spheres where English borrowings are mainly used. Based on the language of the media, we study the models of assimilation of English loanwords in French and Italian. We focus on the most popular English loanwords used in France and Italy, provide statistical data on their use and analyze their grammatical and semantic assimilation. We analyze the most popular loanwords from the English language; study their origin, language context and the way they were modified according to the patterns of the receiving languages. It is advisable to implement the proposed approach in teaching the vocabulary of a second foreign language and to use other tools of corpus linguistics as teaching methods.