Question

they gave him standing ovation change the voice​

Answer 1

standing ovation had given by them.

hope it helps you

Answer 2

They gave him standing ovation.

• Standing ovation had given to him by them.

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We usually use the passive voice

For emphasis

Ex:- A tree in out garden was uprooted by the strom.

Here the stress is on the fact that the tree in the garden was uprooted rather than on the storm.

When the identity of the subject is not clear or not known.

Ex:- The glass window pane was broken (By some one)

Some sentences in the active voice have two objects .

The direct object answers the question Whom or What.

The indirect object answers the question of To whom,or For whom.

Ex:- Sita drew a map for geetha.

Here a map answer that question What and is the object.

Geetha answers the question for whom and is the Indirect object.