Question

5. Change the following to PASSIVE voice the dolphins have learned many tricks
​

Answer 1

Active voice:  The dolphins have learned many tricks

Passive voice: Many tricks have been learned by the dolphins.

• The given active voice is in the present perfect tense. So, the structure of the passive voice is as follows.

subject + has/have + been + past participle + by + object

Rules for changing the active to passive:

• Keep in mind its tense while converting active to passive voice.
• Exchange the places of the subject and object.
• While converting a sentence from active to passive, we should convert the main verb into its past participle which is also known as the third form of a verb.
• We should always use the word "by" in the passive sentence