АНГЛИЙСКИЙ Study the model and use Passive instead of Active Voice.
Model: Builders USE concrete practically everywhere.
Concrete IS USED practically everywhere by builders.
1. The Egyptians did not know cement in old times.
2. They used clay for producing concrete.
3. The Romans and Greeks made concrete of gypsum and lime.
4. For what structures did the Egyptians, Romans and Greeks use concrete?
5. Builders today produce concrete by mixing water, cement and aggregates.
6. We know different kinds of concrete today.
7. Many factors influence the strength of any concrete.
8. Students prepare concrete during their practice.
9. We use different methods in producing concrete.
10. Builders consider concrete very important in modern construction.
Sam played football yesterday
She saw him two years ago.
2.отриц предложение. действующее лицо---вс глагол did с отрицательной частицей not---глагол без окончания ed или первая форма неправильного глагола
Sam did not play football yestarday
She did not see him two years ago
3. вопросительное предложение. вс глагол did---действующее лицо---глагол без окончания ed или неправильный глагол в первой форме
Did Sam play football yesterday?
Did she see him two years ago?