Passive because it doesn't tell us who lost the pencil. Jack had lost the pencil -- is an active sentence The pencil had been lost by Jack -- is a passive sentence. You don't have to have the agent (by Jack)
The passive equivalent is "The car will be repaired by the mechanic."
Passive voice is when the subject has the action done to them. Hold on... that doesn't make too much sense. Here's an example. Passive voice: "The car is being cleaned by the volunteers." Active voice: "The volunteers clean the car." Passive voice is when the subject receives the action. Active voice is the subject doing the action.
Active voice makes writing more direct, engaging, and easier to understand by clearly showing who is performing the action. Passive voice can make sentences wordy, less dynamic, and can obscure the subject of the sentence. Overall, using active voice often results in clearer and more compelling writing.
Passive voice is basically taking the emphasis off the actor in a sentence and putting the emphasis on whatever or whoever was acted upon. For instance, in active voice you would say I smashed the car. In passive voice (like if you were telling your dad), you could say The car was smashed. ... no mention of you at all. Your dad has to ask follow up questions, because you used passive voice. You could also say The car was smashed by me. Still passive voice, still identifying the actor, but placing the emphasis on the car rather than you. Here is an excellent handout on the subject: http://www.unc.edu/depts/wcweb/handouts/passivevoice.html
john has sold car
[Some one] washed the car. You need an active subject to use active voice. Who did the washing? That person should be the actor in the sentence.
NO
Yes but I think only as an axillary verb not as a main verb. If have is the main verb it will change to had in the passive egThe have a new car - passive = The new car is hadby them = not good.Or as an auxiliary verb:They have bought the books.passive = The books have been bought by them.We have eaten the all the apples.passive = All the apples have been eaten.Notice that you have to have a plural object in the active sentence to keep have in the passive sentence. If you have a singular object then in the passive sentence have will change to has.We have eaten the cake.passive = The cake has been eaten.
The council is rebuilding the library. - active sentence.The library is being rebuilt (by the council ) - passive sentence.In passive sentences the agent (the council in above example) can be added but is not necessary.other examples:My car is being repainted.My family's portrait is being painted by a famous artist.Many people are being conned over the internet.
A Fiat car has been bought. You can add the agent (him) if you want. -- A Fiat car has been bought by him.
Take the active sentence (for example "Jimmy bought the green car") and put the current object as the beginning of the sentence. ("The green car") Follow it by the appropriate form of the verb "to be" plus the past participle of the verb. (in this case "was bought") If you want to specify the subject, put it back in after the word "by". In this case our full example sentence becomes, "The green car was bought by Jimmy." Just saying "The green car was bought." would also be correct.As far as I know, these sentences are all passives: "His car is being washed" "The green car has not been stolen" "The blue car will be sold" "The door was left ajar" "The very crumpled, otherwise-fine-looking piece of paper on the floor over there was left by someone when he went through the recycling bin trying to find a card on which to scribble a sketchy map."The actives would be, respectively, as follows: "(Someone) is washing his car" "No one has stolen the green car" "(Someone) will sell the blue car" "(Someone) left the door ajar" I'll let you figure out the active to the last one!