6. Past Perfect


7. Future Will


Modals: MODALS:


*It can be replaced by modals such as should, could, must, may, might, would, etc.

See more examples:

1. Steven Spielberg didn’t produce ‘The Jungle Book’.
‘The Jungle Book’ wasn’t produced by Steven Spielberg.

2. The panther Bagheera found Mowgli in the jungle of India.
Mowgli was found in the jungle of India by the panther Bagheera.

3. Director James Cameron hasn’t created a fantastic movie called ‘Iron Man’.
A fantastic movie called ‘Iron Man’ hasn’t been created by James Cameron.

Note: As you can see in the sentences above, we use the word “by” to introduce the person or the responsible of doing the actions.