The Stage 4 curriculum covers several advanced structures and "common" language pitfalls:
Introduction of 1st and 2nd Conditionals (e.g., "If I go, I will..." vs. "If I went, I would...") to discuss possibilities and hypothetical situations. callan method stage 4 pdf
Passive Voice (past, present, and future forms), Reflexive Pronouns, and "to be worth" + gerund. Vocabulary & Nuance The Stage 4 curriculum covers several advanced structures
Typical vocabulary themes