1. Present Simple

2. Present Continuous

3. Present Perfect

4. Present Perfect Continuous

5. Adjectives

6. Adverbs

7. Direct/indirect questions

8. Past Simple

9. Past Continuous

10. Past Perfect / Past Perfect Continuous

11. Modal verbs

12. Future Simple

13. Future Continuous

14. Future Perfect and Future Perfect Continuous

15. Linkers

16. Pronouns

17. Passive Voice

18. Reported Speech

19. Word order

20. Word building