11. Past simple - 2 ① Form * 과거 부정문 주어 + did + not + 동사원형. negative I You She He It We They did not (didn't) study yesterday. * 과거 의문문 Did + 주어 + 동사원형. (Did 가 과거를 나타내고 있으므로 뒤에 오는 동사는 원형을 써야 함.) questions short answers Did I You She He It We They study? Yes, I You She He It We They did No, didn't I did..