WHO
Subject slot
Proper noun · Article + noun · Possessive + noun · Pronoun
WHAT
5 verb types
be+ING · modal+base · have+PP · do/does · did
WHEN/WHERE/HOW/WHY
Class 3 modifier
prep + noun · -LY adverb
Example sentence
The studentis studyingcarefully.
WHO: article + noun·WHAT: Type 1 (be + ING)·HOW: -LY adverb
25 syntax sets
Progressive, cumulative structure building
Spaced repetition
Failed sets return at optimal intervals
Structure validation
App checks syntax, not spelling
Mastery tracking
Each of the 25 sets requires 10 correct sentences