Fluency and coherence:

* speaks fluently with only rare repetition or self-correction; any hesitation is content-related rather than to find words or grammar

* speaks coherently with fully appropriate cohesive features

* develops topics fully and appropriately

Lexical resource:

* uses vocabulary with full flexibility and precision in all topics

* uses idiomatic language naturally and accurately

Grammatical range and accuracy:

* uses a full range of structures naturally and appropriately

* produces consistently accurate structures apart from 'slips' characteristic of native speaker speech