English language Persian speakers Study and teaching Foreign speakers 3 Phonetics 2 Pronunciation 2 Code switching (Linguistics) 1 Collocation (Linguistics) 1 Contrastive linguistics 1 Discourse analysis 1 Error analysis 1 Errors of usage 1 Gender identity 1 Gender identity in education 1 Language transfer (Language learning) 1 Learning strategies 1 Learning, Psychology of 1 Pronunciation by foreign speakers 1 Second language acquisition 1 Social aspects 1 Textbooks 1 Usage 1 Vowels 1 Writing 1 Written English 1