substitution drill is to let the student see and practice a large number of highly similar examples of a single construction:
Pattern sentence: I brought my camera.
| New cue: | Expected response: |
| flashlight | I brought my flashlight. |
| raincoat | I brought my raincoat. |
| gloves | I brought my gloves. |
| homework | I brought my homework. |
| golf clubs | I brought my golf clubs. |
Even in such a simple drill as this, considerations of realism (Assumption I) will encourage us to go beyond such old standby nouns as book, pen, pencil: the same considerations require us to use golf clubs or homework only with students who are likely to have golf clubs or homework that they sometimes carry around with them.
There are many other varieties of substitution drill.This is not the place to catalog them. One is 'substitution-correlation,' in which a change of a major word at one place in the sentence entails a grammatical change somewhere else.
Pattern sentence: I brought my camera.
| New cue: | Expected response: |
| (John) | John brought his camera. |
| (Mary) | Mary brought her camera. |
| everyone | Everyone brought his camera. |
| some people | Some people brought their cameras. |
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