Exercise 1. Make the sentences interrogative and negative: 1. The students have passed all their exams.
2. They have answered all the questions.
3. You have solved the problem.
4. Something has happened to your friend.
5. She has changed much.
6. Jane has made a lot of mistakes in her dictation.
7. We have met him before.
8. The rain has stopped.
9. Our teacher has just returned from London.
10. I have been there very often.
Объяснение:
условные обозначения типа 3
Если вы (чтобы не опоздать) на автобус, вы (чтобы не опоздать) на свою встречу.
Если это (дождь) вчера, то все дороги (перекроют).
Если вы (не отвлекать) меня, я (закончить) мое задание вовремя.
Если наша команда (играет) лучше в обороне, мы (выигрываем) игру.
Я (уведомляю) вас раньше, если я (получаю) электронное письмо от банка.
Я (останавливаюсь) на красный свет, если я (вижу) его.
Дженнифер (чтобы не промокнуть), если она (возьмет) свой зонтик с собой.
Я (покупаю) вам хотя бы небольшой подарок, если я (знаю), что это был ваш день рождения.
Если Джон (пригласит) меня на свою вечеринку, я (буду) там.
2). A city is a large human settlement. It can be defined as a permanent and densely settled place with administratively defined boundaries whose members work primarily on non-agricultural tasks. Cities generally have extensive systems for housing, transportation, sanitation, utilities, land use, and communication.
3.In addition to serving as a site for royal coronations and burials, Westminster Abbey has famously been the location for 17 royal weddings—including the 2011 marriage of Prince William to Catherine Middleton
4.Buckingham Palace has served as the official London residence of the UK's sovereigns since 1837 and today is the administrative headquarters of the Monarch. Although in use for the many official events and receptions held by The Queen, the State Rooms at Buckingham Palace are open to visitors every summer.
5.The West End is the richest and most beautiful part of London. It's the symbol of wealth and luxury. The best hotels, shops, restaurants, clubs, and theatres are situated there.
6.The poorest statistical area in London; Barking, Dagenham and Havering, has an average disposable income of £16,801 per head – two and a half times poorer than the richest area in the capital.
7.The UK has been described as a "cultural superpower", and London has been described as a world cultural capital.