Ex 1.
Open the brackets using Present Simple Passive, Past Simple Passive, Future Simple Passive.
1. The slippers (to find) under the table yesterday.
2. Some mistakes cannot (to forgive) .
3. When (to lose) your passport ? – I don’t remember, but I think it happened next week.
4. The ship just (to leave) by all passengers.
5. Your words (not to forget) ___ so soon.
6. The airport (to build) in 1997.
7. I (to invite) to my friend’s party next week.
8. (to deliver) the parcel lately?
Ex 2.
Ask 4 questions to the underlined words using the same passive forms.
In each sentence, underline the verb, which expresses an ought.
At first man had no carriages and when he needed to carry things from place to place, he had to use his own muscles.
A travel to the Moon needs a great deal of planning. For a beginning we must decide what flight route we may follow.
There is a project of round-the-year sea and river navigation in which Russia, the USA and Canada should be jointly interested.
The problem now is to create new materials not existing in nature and having required properties.
TASK 6
In each sentence underline the verb that expresses the possibility of action.
Rontgen knew that the cathode rays could make the screen glow.
An important factor of melting ice in the Arctic might be the possibility of round-the-year sea and river navigation.
Flying from one part of the world to another satellites will be able to investigate the balance of sunlight energy absorbed and dissipated in the earth's atmosphere.