Top 6/10 Common Mistakes to Avoid in English with examples 4. Confusing homophones: Mixing up words that sound the same but have different meanings (e.g. "there" and "their") 5. Improper use of adjectives and adverbs: Misusing adjectives and adverbs in a sentence (e.g. "He run fast" instead of "He runs fast") 6. Overuse of filler words: Overusing filler words like "um" and "like"