Content level B2.1:
1. The past perfect.
2. The past perfect continuous.
3. The future continuous.
4. Ought to (expressing probability).
5. Should, ought to (expressing recommendation/advice).
6. Might, could, shall (expressing suggestion).
7. Interrupted past actions in progress.
8. Prefer, would prefer, would rather.
9. Would you mind ... ? Do you mind ... ?
10. Be worth.
11. Be used to.
12. Get used to.
13. There may have been, there might have been.
14. I wish ...
15. Like vs. As.
16. If vs. Whether (review).
17. Look, look like, be like.
18. Look like, smell like, taste like, sound like, feel like, seem like.
19. Other people (introduction to 'other').
20. In case.
21. In case of.
22. Conjunction: though.
Content level B2.2:
1. The future perfect.
2. Hope, wait, expect.
3. But I wish …
4. Borrow, lend, owe, loan.
5. The future unreal conditional.
6. Else, or else.
7. Other, another (as adjectives).
8. Others, another (as pronouns).
9. Make vs. do.
10. Used to.
11. Did you use to … ? did there use to be … ?
12. Must + have + past participle.
13. Ought to (expressing assumption).
14. Have to, must (expressing certainty).
15. Shall (volunteering).
16. As long as, provided (that).
17. Rather, somewhat (adverbs).
18. Meet vs. know, get together with, get to know.
19. Look forward to.
20. Most (of the), the majority (of).
21. It depends on.
22. In charge of.
23. Only if.
24. Relative clauses and relative pronouns.
Content level B2.3:
1. Future perfect (review)
2. Future perfect continuous
3. Plan to do something, think about doing something
4. Should + have + past participle (expressing regret)
5. Had better (expressing strong recommendation)
6. Would (talking about past habits/routines)
7. Shall (expressing promises)
8. May + have + past participle, might + have + past participle
9. Passive forms (all tenses)
10. Phrasal verbs
11. Mixed conditional 3,2
12. Afford
13. So do I, neither do I
14. Be supposed to
15. In the meantime, meanwhile
16. As if + simple past, as though + simple past
17. Be worthwhile
18. It doesn't matter, it doesn't make any difference
19. I don't care
20. Plenty of (vs. Enough)
21. Narrative tenses
22. Almost always vs. Hardly ever
23. Almost everyone vs. Hardly anyone
24. By the time