We defined the ship's positions.They received a radiogram.The sea was rough.There were gales over the sea.Изменить эти

1) We defined the ship\'s positions. - We did not define the ship\'s positions.2) They received a radiogram. - They did not receive a radiogram.3) The sea was rough. - The sea was not rough.4) There were gales over the sea. - There were not gales over the sea.В первых двух предложениях глагол did заменяет окончание -ed в глаголах прошедшего времени.В третьем и четвертом предложениях мы добавляем частицу not для того чтоб обозначить то, что предложение отрицательное.