ACTIVE & PASSIVE AND FORM

•         Note: if the doer (someone, somebody, someone, somebody, etc) is as a subject in active so in the passive the doer like that is not necessary to write.

            e.g. Someone has stolen my phone cell in a train.

My phone cell has been stolen in a train.

Exercise

1. John is calling the other members
2. Should these contracts be signed by the manager?
3. The fire has caused considerable damage
4. Thirty houses were not destroyed by the tornado
5. The company orders some new equipment
6. The president should have been called this morning.

reference :http://diah_aw.staff.gunadarma.ac.id/Downloads