Grammar English language -- 30 Study and teaching 19 French language -- 16 English 15 Spanish language -- 13 Pronounciation 12 more ... Textbooks for foreign speakers -- 10 German language -- 7 Vocabulary 7 Pronunciation 6 Textbooks for foreign speakers 6 Usage 6 French Language -- 5 Study and teaching -- 5 Foreign speakers 4 Glossaries, vocabularies, etc 4 Arabic language -- 3 Chinese language -- 3 Self-instruction 3 Sentences 3 Conversation and phrase books 2 Dictionaries -- 2 English speakers 2 Malay language -- 2 Rhetoric 2 Sound recordings for English speakers 2 Spoken German 2 Studying and teaching -- 2 Vocabulaire 2 less ...