1. Passives

2. Present Simple : active +
passive
 Active: Peter builds a house every ten
years.
 Passive: A house is built (by Peter) every
ten years.

3. Past Simple : active + passive
 Active: Peter built a house yesterday.
 Passive: A house was built (by Peter)
yesterday.

4. Present Perfect : active +
passive
 Active: Peter has built houses since 1990.
 Passive: Houses have been built (by Peter)
since 1990.

5. Now you try…
1. The words … (explain) by the teacher today.
2. We … (send) a letter the day before
yesterday.
3. This street … (already close) because of the
snow.
4. He … (invite) to the party yesterday.
5. I … (give) the book by my friend last Sunday.
6. The dishes … (not wash) by my brother yet.

6. Now you try…
1. The words are/were explained by the
teacher today.
2. We were sent a letter the day before
yesterday.
3. This street has already been closed because
of the snow.
4. He was invited to the party yesterday.
5. I was given the book by my friend last
Sunday.
6. The dishes haven’t been washed by my
brother yet.