Study and teaching English language 17 Language and languages 7 Discourse analysis 5 Second language acquisition 4 Cohesion (Linguistics) 3 Competence and performance (Linguistics) 3 Composition and exercises 3 Contrastive linguistics 3 Foreign speakers 3 Persian speakers 3 Pragmatics 3 Rhetoric 3 Social aspects 3 Speech acts (Linguistics) 3 Applied linguistics 2 Chinese language 2 Code switching (Linguistics) 2 Error analysis 2 Errors of usage 2 Interlanguage (Language learning) 2 Language 2 Linguistic change 2 Politeness (Linguistics) 2 Pronunciation by foreign speakers 2 Writing 2 Written English 2 Written communication 2 Children 1 Classification 1