Advanced control is often about alternatives
At this level the problem is frequently not “can I express the meaning at all?” but “which version fits this audience, certainty level and situation?” A learner may need several ways to qualify a claim, enter a discussion, reframe a problem or disagree without turning every conversation into a duel.
Frames make those alternatives inspectable. Contrasts then show where the boundary lies between nearby options.
Patterns connect grammar with discourse
A traditional grammar syllabus often organises knowledge by form. Real communication cuts across those chapters. Explaining a trade-off can involve conditionals, stance markers, comparison and discourse organisation in the same paragraph.
Metkagram sets therefore organise many B2–C1 patterns by job: discussion management, register shifting, paraphrasing, evidence, causality, uncertainty or perspective taking. Grammar remains visible, but the practice target is a usable communicative decision.
Depth matters more than a heroic pattern count
A large catalogue is useful for discovery, but a learner does not need to “complete” thousands of Frames. It is more practical to select a small set that matches current needs, study realistic examples, compare nearby alternatives and return to the Frames across time.
The measure of progress is not how many pages were opened. It is whether useful structures become easier to recognise, retrieve and adapt when the topic changes.