Language Stage 4

During Stage 4, sentence forms expand with the development of wh questions. The concept of actions that happened in the past is developing, and the person learns to say common past tense verbs that do not end in –ed, such as saw, said, told, and went. Use of possessive endings will emerge. Additional skills that develop during Stage 4 can be found in the Reference Charts located at

Approx. Vocab. Size Utterance Length in Morphemes* Examples
1,000 to 2,000 words Range: 3.0 to 3.75 Mean: 3.5 I saw bird., Daddy’s car, I fell down., It is hot., Where is it?, Don’t want.

*a morpheme is the smallest unit of meaning in a language

Need more help? Check out our Target Vocabulary Lists and Lessons, Glossary or Frequently Asked Questions.

Language Objectives

  • Continue to speak in simple complete sentences
  • Increase the number of words he or she uses meaningfully
  • Ask simple wh questions
  • Ask questions using pronoun-verb phrases (interrogative reversal)
  • Continue to use negatives in simple sentences
  • Continue to use simple complete sentences to express requests
  • Use common irregular past tense verbs to show action in the past
  • Use linking verbs is and are correctly
  • Use adjectives in simple sentences to describe things
  • Use negative pronoun + verb phrases

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Stage 4 Communicator Videos