The teacher is explaining new rules.
The teacher explained new rules.
The teacher has already explained new rules.
The teacher had explained new rules.
The teacher was explaining new rules.
The rules were explained by the teacher.
new rules are being explained by the teacher.
new rules were being explained by...
... will be explained by...
...has been explained by...
the teacher will have explained new rules
new rules will have been explained
the teacher has been explaining new rules
the teacher had been explaining new rules
NOTE: Present( Past) Perfect Continuous почти не используется в страдательном залоге
Last summer, Anne and Dan's families picnicked in the garden.
Русский.
В зоопарке обитало много живности.Самые посещаемые животные были крокодил по имени Смоук и обезьянка Несси.Несси прибыла в зоопарк недавно.Эта обезьянка очень любила играть,что не скажешь о крокодиле.Смоук большую часть времени проводил в тени.
English.
The zoo was inhabited by many animals. The most visited animals were a crocodile named Smok and the monkey Nessie. Nessie arrived at the zoo recently. This monkey was very fond of playing, which you can not tell about the crocodile. Most of the time, Smoke spent in the shade.