Answer:
16. A form will be given to you to fill in your particulars. OR You will be given a form to fill in your particulars.
17. He wasn't told about the change in the time of the meeting.
18. Why isn't the car given a thorough checking-over before they buy it?
19. The latex is carried to the factory, where it is coagulated and made into sheets.
20. The police inspector said that roadblocks have been set up at every strategic point and the public has been warned to keep a lookout for the escaped prisoners.
Explanation:
In order to change a sentence from the active voice into the passive, we follow the steps below:
1. The subject of the active sentence becomes the agent of the passive one. It is preceded by the preposition "by".
2. The object of the active sentence becomes the subject of the passive one. If the verb has both a direct and an indirect object, either can be chosen to be the new subject. That is why we have two ways or rewriting sentence number 16.
3. We must identify the verb and its tense. In the passive, we add the auxiliary "be" respecting the original tense, and we change the main verb into its past participle form. Modal verbs such as "can", "may", or "should" are kept.
Take a look at the example below:
- Active voice: I (sub.) have given (verb, present perfect) her (object I) a new necklace (object II).
- Passive voice, option I: She (sub.) has been given (verb, p.p. aux. "be") a new necklace (object) by me (agent).
- Passive voice, option II: A new necklace (sub.) has been given (verb, p.p., aux. "be") to her (object) by me (agent).
</h2>
</h2>