formula sostavlenija present simple i present continuous

Present Simple:
V/Vs - глагол / глагол с окончанием s (если подлежащие выражено местоимением he/she/it или его можно заменить на одно из этих местоимений)
N - существительное (подлежащие)
Положительная форма:  N + V/Vs
Пример: I like potatoes. He goes to school.
Отрицательная: N + do not / does not + V
Пример: I do not like potatoes. He does not go to school.
Вопросительная: Do / Does + N + V
Пример: Do I like potatoes. Does he go to school.

Present Cont.:
V ing - глагол с окончанием ing (swimming, looking, trying)
Положительная: N + is/am/are + V ing
Пример: He is going to school now. I am swimming right now.
Отрицательная: N + is/am/are + not + V ing
Пример: He is not doing his homework now. I am not swimming right now.
Вопросительная: Is/Am/Are + N + V ing
Пример: Is he doing his homework. Am I swimming now?