To remedy poor English skills from junior high school, start by identifying your weak areas. Focus on improving vocabulary, grammar, and pronunciation. Use flashcards to memorize new words, practice sentence structure with online exercises, and watch English videos with subtitles to improve pronunciation.
Read English books or articles to immerse yourself in the language. Join an English learning community or find a language exchange partner to practice speaking. Consider hiring a tutor for personalized guidance. Utilize apps like Duolingo or Babbel for daily practice. Watch English movies with subtitles to understand context and improve listening skills.