At C1, a review must show sophisticated vocabulary, nuanced evaluation, and a clear personal voice. It should avoid both gushing praise and unsupported criticism.
Structure
Title → Brief description → Evaluation → Recommendation
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Semi-formal: engaging, informative, personal but not casual
Length
140–190 words
Key feature
Specific detail and evidence, not vague opinion
Advanced language for reviews
Nuanced praise
What is particularly striking is… / The standout feature is…
Qualified criticism
While the pacing is occasionally slow, the performances compensate.