Определите субъектный инфинитивный оборот и переведите предложения:
1. It is necessary for us to start early in the morning. 2. It is dangerous for him to cross the river here. 3. It is important for her to work systematically. 4. It is necessary for you to air the room twice a day. 5. The text is too difficult for students to understand. 6. The weather is too bad for us to go to the forest. 7. The coat is too long for her to wear.

1. It is necessary for us to start early in the morning. - Нам необходимо отправиться рано утром.2. It is dangerous for him to cross the river here. - Здесь (ему) перебираться через реку опасно. 3. It is important for her to work systematically. - Для нее важно работать систематически. 4. It is necessary for you to air the room twice a day. - Вам необходимо проветривать комнату два раза в день.5. The text is too difficult for students to understand. - Текст слишком сложный для понимания студентами (учащимися).6. The weather is too bad for us to go to the forest. - Погода слишком плохая, чтобы нам пойти в лес.7. The coat is too long for her to wear. - Пальто слишком длинное, чтобы она его носила.