This well-established standard textbook deals with areas of the English language which are well-known 'trouble spots' for the foreign learner: tense, progressive and perfect aspects, mood and the modal auxiliaries.
"Acknowledgements Key to Symbols Preface to second edition Introduction" 1. Simple present and past tenses 2. Progressive Aspect 3. The Expression of Past time 4. The expression of future time 5. The primary modal auxiliaries 6. Indirect speech 7. Theoretical and hypothetical meaning "Further reading Index"