A substitution drill is a classroom technique used to practice new language. It involves the teacher first modelling a word or a sentence and the learners repeating it. The teacher then substitutes one or more key words, or changes the prompt, and the learners say the new structure.
Example
The following sequence is an example of a substitution drill:
Teacher: I have a new car Learners: Have you? Teacher: I don't like fish Learners: Don't you? Teacher: I love coffee Learners: Do you?