Question

We must save trees change into passive voice​

Answer 1

Answer:

Trees must be saved by us.

Answer 2

Answer:

Trees must be saved by us.

Explanation:

• We use modal verbs/modal auxiliary verbs i.e. verbs like can, could, and should–to refer to things such as ability, possibility, permission, or obligation.

• And we use the passive voice to emphasize the object of an action rather than the doer/subject of the action.

• In general, this structure is used for modal verbs in the passive voice: Modal verb + be + past participle

Let us discuss the Passive Voice Rules for Modals:

• There exist two basic rules for converting active voice into passive voice as follows:

• 1. The places of the subject and the object in a sentence are interchanged for converting active voice to passive voice. i.e. the object replaces the subject

• 2. Only Verb form 3 (saved) becomes the main verb in passive voice.

• 3. For auxiliary verbs in passive voice such as CAN, SHOULD, MUST, MAY, MIGHT, OUGHT TO)

• The auxiliary verb 'be' is used with the present modal verbs in Passive Voice.    

• Thus, by following the rule, the sentence in active voice becomes, Trees (objects) must be(modal + be) saved(past participle-Verb 3) +by us (Subject).      

Therefore, the sentence in passive voice would be-

Trees must be saved by us.  

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