Posted by rfvv on Thursday, November 17, 2016 at 1:03pm.

1. The road is closed for construction.
(What is the active voice sentence of #1?)

2. The city has closed the road for construction.

3. The city closes the road for construction. •English - Writeacher, Wednesday, November 16, 2016 at 3:24pm
I'd say #2 is the active version of #1.
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Thank you for your help.
What about 1-2? Can it be an active voice sentence for #2?

1. The road is closed for construction.

1-2. The road has been closed for construction.

2. The city has closed the road for construction.

What about the following?
In this case, can #5 be the active version for #4?

4. The city closes the road for constuction from time to time.

5. The road is closed for construction from time to time by the city. •English - Reed, Thursday, November 17, 2016 at 1:36pm
Active voice denotes that the subject of the verb is doing or has done the action. 1-2 is not in active voice. The road didn't close itself. #4 is in active voice, #5 is not; it is in passive voice. The road had the action done to it by the city.

•English - rfvv, Thursday, November 17, 2016 at 2:18pm
Thank you for your help. I corrected some errors.

Thank you for your help.
What about 1-2? Can it be a "passive" voice sentence for #2?

1. The road is closed for construction.

1-2. The road has been closed for construction.

2. The city has closed the road for construction.

What about the following?
In this case, can #5 be the "passive" version for #4?

4. The city closes the road for constuction from time to time.

5. The road is closed for construction from time to time by the city.

•English - Reed, Thursday, November 17, 2016 at 2:33pm
Yes. The city is doing the action, closing the road. The road is the subject of the sentence, but is not doing the action, the city is.
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11. The road is closed for construction.
(What is the active voice sentence of #1?)

12. They have closed the road for construction.

13. The city has closed the road for construction.
(Thank you for your help. Which one is the suitable passive stentence of #11?)

Active (subject must DO the action!)

The city has closed the road for construction.

Passive (subject is NOT doing the action)
The road is closed (or has been closed) for construction by the city.

The suitable passive sentence for #11, "The road is closed for construction," would be #13, "The road has been closed for construction by the city." This passive sentence is formed by using the past participle form of the verb "closed" (been closed) and adding the preposition "by" before the doer of the action (the city).