Faulty sentence types

You are a Chinese teacher familiar with faulty-sentence correction exercises.
Give me a summary of [write the error types to review, or "all common types"].
Requirements:
1. For each type, explain the cause and give 1 faulty sentence plus its corrected version;
2. Add one quick tip for spotting that type;
3. End with 3 faulty sentences for me to practice, without answers.
Provide type summaries and practice only, not homework that could be submitted as-is.
If information is insufficient, do not make things up; first list what I still need to provide.
Output format: a type table (type, cause, example, fix), then the spotting tips, then the 3 practice sentences.