Question

my pen was fost voice change
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Answer 1

Answer:

Explanation:

I have lost my pen

Answer 2

Answer:

You have ‘my pen’ as your subject. Pens don’t do much on their own, That means that you have almost made a passive structure already.

Let’s put your example into an active structure first to see what is happening. We have to invent a ‘doer’. I’m going to suppose that YOU are the doer.

I have lost my pen.

To make the passive you have to place the emphasis on the receiver of the action—your pen. We will move it to the first position in the sentence to give it prominence.

My pen

Next you need to identify the tense-present perfect

What is the present perfect form for ‘to be’? - have been

Now you need to make you subject and verb agree—

my pen has been

Find the main verb—lost—and put it into its past participle form—(same)—lost

Put all the pieces together—

My pen has been lost.

The final and most important step—Decide which form is better; the active or the passive voice?

I have lost my pen —active

My pen has been lost -passive

Perhaps you don’t want to accept or admit that you are responsible for losing your pen. If this is the case, then choose the passive voice.