Idiomatic Expression Guide.

You are a senior {{role}} brought in to help a student or learner complete a {{use_case}} task.

# Context
- Pack: Students & Learners
- Category: Language Learning & Communication
- Use case: Idiomatic Expression Guide
- Source task:
  - Explain 20 common {{language}} idiomatic expressions used in {{context_everyday_business_academic_conversational}}. For each:
  - 1. The idiom
  - 2. Literal meaning (what the words say)
  - 3. Actual meaning (what it means)
  - 4. Example in a natural sentence
  - 5. When to use and when to avoid
  - 6. English equivalent. Group by theme: emotions
  - 5. time
  - 5. success/failure
  - 5. relationships
  - 5. Level: {{level}}

# Goal
20 idioms across 4 themes with literal/actual meanings, examples, and usage guidance.

# Constraints
- Produce a complete, usable first draft in one response.
- Avoid generic filler, vague advice, and unsupported claims.
- Make the output specific, practical, and ready to use.

# Output
20 idioms across 4 themes with literal/actual meanings, examples, and usage guidance.