Ex. 4. Make predicates in active passive ones, and vice-versa (Low Intermediate Level). 1. They were cooking dinner when I arrived.
Dinner … when I arrived.
2. He painted this picture in 1986.
This picture … in 1986 by him.
3. Did the plan interest you?
… you … in the plan?
4. They had finished the preparations by the time the guests arrived.
The preparations … by the time the guests arrived.
5. You should take care when working on electrical equipment.
Care … when working on electrical equipment.
6. Someone will speak Japanese at the meeting.
Japanese … at the meeting.
7. The instructions have been changed.
Someone … the instructions.
8. This car was manufactured in Japan by Toyota. Toyota … this car in Japan.
9. Last year 2,000 new units had been produced by the time we introduced the new design.
We … 2,000 new units by the time we introduced the new design last year.
10. All the work will have been completed by five o'clock this evening.
You … all the work by five o'clock this evening.
11. We were told to wait here. Someone … us to wait here.

Ex. 6. Make predicates in active passive ones, and vice-versa (Low Intermediate Level).
1. Lunch was being served when we arrived.
They … lunch when we arrived.
2. Lectures are recorded and posted on the Internet.
They … lectures on the Internet.
3. Portuguese has always been spoken in this village.
People in this village … Portuguese.
4. They make shoes in that factory.
Shoes … in that factory.
5. People must not leave bicycles in the driveway.
Bicycles … in the driveway.
6. They built that skyscraper in 1934.
That skyscraper … in 1934.
7. The students will finish the course by July.
The course … by July.
8. They are repairing the streets this month.
The streets … this month. .
9. They make these tools of plastic.
These tools … of plastic.
10. They have finished the new product design.
The new product design … .
11. Ann had cooked the dinner by the time her husband came back home.
The dinner … by the time her husband came back home.

1. Dinner was being cooked when I arrived.
Explanation: The original sentence is in the active voice with the subject "They" performing the action of cooking dinner. To change it to the passive voice, we use the past continuous tense ("were cooking") and include the auxiliary verb "be" ("was being") before the past participle of the main verb ("cooked").

2. This picture was painted in 1986 by him.
Explanation: The original sentence is in the active voice with the subject "He" performing the action of painting the picture. To change it to the passive voice, we use the past simple tense ("painted") and include the auxiliary verb "be" ("was") before the past participle of the main verb ("painted"). We also change the subject from "He" to "This picture" and add the preposition "by" to indicate the doer of the action.

3. Were you interested in the plan?
Explanation: The original sentence is in the passive voice with the subject "the plan" receiving the action of interest. To change it to the active voice, we use the past simple tense ("interest") and change the subject to "you". We leave out the auxiliary verb "be" and the preposition "in", as they are not necessary in the active voice.

4. The preparations had been finished by the time the guests arrived.
Explanation: The original sentence is in the active voice with the subject "They" performing the action of finishing the preparations. To change it to the passive voice, we use the past perfect tense ("had been finished") and include the auxiliary verb "be" ("had been") before the past participle of the main verb ("finished").

5. You should be careful when working on electrical equipment.
Explanation: The original sentence is in the active voice with the subject "You" performing the action of taking care. To change it to the passive voice, we use the verb "be" ("should be") before the adjective "careful". We also change the verb "take" to the verb "be" to indicate the action of being careful.

6. Japanese will be spoken at the meeting.
Explanation: The original sentence is in the active voice with the subject "Someone" performing the action of speaking Japanese. To change it to the passive voice, we use the future simple tense ("will be spoken") and include the auxiliary verb "be" ("will be") before the past participle of the main verb ("spoken").

7. The instructions have been changed by someone.
Explanation: The original sentence is in the passive voice with the subject "The instructions" receiving the action of being changed. To change it to the active voice, we use the present perfect tense ("have been changed") and change the subject to "Someone". We leave out the preposition "by" as it is not necessary in the active voice.

8. Toyota manufactured this car in Japan.
Explanation: The original sentence is in the passive voice with the subject "This car" receiving the action of being manufactured. To change it to the active voice, we use the past simple tense ("manufactured") and change the subject to "Toyota". We also add the preposition "in" to indicate the location of the action.

9. We produced 2,000 new units by the time we introduced the new design last year.
Explanation: The original sentence is in the active voice with the subject "We" performing the action of producing 2,000 new units. To change it to the passive voice, we use the past perfect tense ("had been produced") and include the auxiliary verb "be" ("had been") before the past participle of the main verb ("produced"). We also change the word order slightly to match the passive voice structure.

10. You will have completed all the work by five o'clock this evening.
Explanation: The original sentence is in the active voice with the subject "All the work" receiving the action of being completed. To change it to the passive voice, we use the future perfect tense ("will have been completed") and include the auxiliary verb "be" ("will have been") before the past participle of the main verb ("completed"). We change the subject to "You" and add the preposition "by" to indicate the deadline.

11. Someone told us to wait here.
Explanation: The original sentence is in the active voice with the subject "We" receiving the action of being told to wait. To change it to the passive voice, we change the subject to "Someone" and use the past simple tense ("told") with the preposition "to" before the object pronoun "us".