à) They usually close the shop at 8. The shop is usually closed at 8.
They closed the shop at 8 yesterday. The shop was closed at 8 yesterday.
They will close the shop at 8 tomorrow. The shop will be closed at 8 tomorrow.
á) The students are translating the text now. The text is being translated by the
students now.
The students were translating the text The text was being translated by the
the whole lesson yesterday. students the whole lesson yesterday.
The students will be translating the text –
the whole lesson tomorrow.
â) We have just written the test. The test has just been written (by us).
We had written the test before the The test had been written before
bell rang. the bell rang.
We shall have written the test before The test will have been written before
the bell rings. the bell rings.