ES 1 PAG 395: Trasforma le frasi nella forma passiva. Ometti il complemento d’agente quando non è necessario.

1. Beer is never drunk by Michael.

2. Our summer holidays have just been booked.

3. Some texts are send by Rachel two days ago.

4. When I arrived, the mirror had already been broken.

5. Vegetables are grown by farmers.

6. Don’t worry. He will be called by me straight away!

7. A ghost has just been seen in the castle.

8. More than 30 plays are written by Shakespeare.

ES 2 PAG 395: Completa il brano che descrive come si produce il profumo, inserendo i verbi tra parentesi in forma passiva al simple present.For the first step, natural ingredients such as flowers, fruit and wood are harvested from around the world. Alcohol, petrochemical and other chemical substances are also used in the manufacture of perfumes. Not every plant contains essential oils, oils aren’t produced naturally by, for example, lily of the valley flowers.In the next step, the oil is extracted. This are done immediately after picking. Solvent extraction is common method. To extract oils from roses, layers of petals are placed on a metal-layered drum. The flowers then are immersed in a solvent. The result of this process is a waxy material that contains the oil, which then are washed in ethyl alcohol. The oil is dissolved in the alcohol and rises. Other extraction methods include steam distillation, enfleurage and maceration. A huge of plants are needed to get a small amount of essential oil, Approximately 200,000 rose flowers, that is 400 kilograms of flowers are required to make 600 grams of essential oil.Once the essential oil is ready, it together according to a certain formula and then it is mixed with alcohol. It may take as many as 800 different ingredients and several years to develop the special formula for a scent. In the last step of the process, the perfume is aged for severl months or even years after is it blended.

ES 3 PAG 395: Fai una ricerca sul procedimento di produzione dell’olio di oliva e scrivi un breve testo per descriverlo usando principalmente il passivo.

The olives are washed in order to eliminate earth andleaves. At the mill, an olive paste is created by crushing. The traditional method, still practised by many small mills, involves large granite millstones which crush the pulp and the olive stone. The next phase is malaxing, a slow and continuing remixing of the olive paste. During the mixing facilitating the release of oil from the vacuoles. The olive paste is distributed onto filtermats which are stacked in high columns and then considerable pressure is applied, so that the oil together with the vegetation water is extracted.

ES 4 PAG 395: Completa le frasi con i verbi tra parentesi in forma passiva e al tempo indicato.

1. We got there late and the birthday cake had alreadybeen served.

2. Is there anybody here who knows when the Tower of London was built.

3. Some of these paintings have been lent by a private collector.

4. If it stops snowing tomorrow, the roads will be cleared!

5. The ticket that won the prize in the lottery was bought last week near Rome.

6. Yesterday the alarm of a car that had been parked near ours rang for more than two hours!

ES 5 PAG 395: Trasforma le seguenti frasi passive nella forma negativa e interrogativa.

1. The care isn’t washed by David every Saturday./Is the car washed by David every Saturday.

2. The film hasn’t been seen by lots of teenagers./Has the film been seen by a lots of teenagers.

3. The children weren’t helped by an elderly lady./ Were the children helped by an elderly lady?

4. That bridge hadn’t been built just the year before./ Had that bridge been built the year before?

5. A ghost hasn’t been seen here./ Has a ghost been seen here?

6. The meeting won’t be put off./Will the meeting be put off?