How Brazilian learners express modality through verbs and adverbs in their writing: a corpus-based study on n-grams

Based on the view of modality in the theoretical framework of descriptive syntax, this study examined a corpus of learners compared with a corpus of native speakers of English, aiming to identify different patterns of expression of modal meanings, particularly, adverbs and modal verbs. Therefore, the study focused its analysis on n-grams containing modal verbs and adverbs that express modality. This analysis revealed the prevalence of epistemic values in both corpora, and the existence of distinct patterns in the expression of this type of modality. In the non-native corpus, the expression of modality is restricted when compared to the native speakers'. In the corpus of native speakers, there was a prevalence of adverbs with modalizing meanings. In addition, learners tend to use some modal verbs differently. This study may contribute to the emerging field of corpora linguistic studies as well as to the area of syntax, with possible implications for the teaching of academic writing in English.