Corpora are often used for language instruction and learning. They give information about how a language works. They also help compute the relative frequency of different features. Exploring corpora can help students to observe slight differences of usage and to make comparisons between languages. Corpora are also used to investigate cultural habits expressed via language. NB a corpus will not give information about whether something is possible or not, only whether it is frequent or not! Corpora are also used in translation. Comparable corpora permit to compare the use of apparent equivalents. Parallel corpora let us to see how words and phrases have been translated in the past. General corpora can be used to establish norm of frequency and usage. So, it can be claimed that corpora are beneficial for translation studies. Let's find out why is that!