English grammar reference

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English Articles

Indefinite vs definite articles and postposed forms. Adapted for English. This English reference focuses on recognition, lookup, and practical reading rather than drills.

Rule 1: Separate definite and indefinite forms

Use this section to separate definite and indefinite forms in English. Check the example sentence, then compare the form with the surrounding words before applying the pattern elsewhere.

Rule 2: Notice where articles attach

Use this section to notice where articles attach in English. Check the example sentence, then compare the form with the surrounding words before applying the pattern elsewhere.

Rule 3: Check agreement

Use this section to check agreement in English. Check the example sentence, then compare the form with the surrounding words before applying the pattern elsewhere.

Examples

I have a book. The book is new.

I have a book. The book is new.

The girl sees a dog.

The girl sees a dog.

English lookup checklist

QuestionWhat to check
MeaningWhat does the form contribute to the sentence?
AgreementDoes it match person, number, gender, case, or tense?
PositionDoes placement change emphasis or grammatical role?

Common Mistakes

  • Do not translate the English pattern word-for-word from English.
  • Check the whole phrase before deciding what a single form means.
  • Watch for register: a correct written form can sound too formal in casual speech.

Lookup Tips

  • Start with the example closest to your sentence.
  • Identify the trigger word or ending before memorizing a rule.
  • Save the topic as a focus if you expect to revisit it.