Top 10/10 Common Mistakes to Avoid in English with examples 7. Inconsistent tenses: Changing tenses mid-sentence without a clear reason 8. Improper punctuation: Misusing or forgetting punctuation marks like commas and semicolons 9. Incorrect word order: Having an improper word order in a sentence (e.g. "I always to play soccer" instead of "I always play soccer") 10. Failing to proofread: Neglecting to proofread for spelling, grammar, and punctuation errors before submitting work.