B1

Capital letters (core rules)

Definition / Explanation

Capital letters show the beginning of a sentence and mark certain important words, especially names and titles. Correct capitalization makes writing easier to read and gives it a more careful, professional look. At B1, learners should already know the basic idea, but they still need to apply the rules consistently. Common problems include days, months, languages, and the pronoun I. This topic matters because capitalization errors are small, but very noticeable in written English.

Key Rules

  • Start every sentence with a capital letter.
  • Use capitals for names of people, places, companies, languages, nationalities, days, and months.
  • Use capitals in titles when needed: Dr Smith, Professor Green.
  • Do not usually capitalize common nouns such as job, city, car, or school unless they are part of a name.
  • The pronoun I is always capitalized.

Examples

  • Monday is my busiest day.
  • She speaks English and Spanish.
  • We visited Paris in April.
  • Dr Smith works at the local hospital.
  • I think the meeting starts at ten.

Common Mistakes

  • ❌ we met on monday. -> ✅ We met on Monday.
  • ❌ He speaks english very well. -> ✅ He speaks English very well.
  • i don't know the answer. -> ✅ I don't know the answer.

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