Question

he cut the tree yesterday ( change the voice)

Answer 1

tree was cut by him yesterday .
hey I am good at English, but I tried please report if wrong..
sorry buddy

Answer 2

The tree is cut by me is correct sentence.

So the trees are an object.

And it becomes subject.

And it can become as a preposition to indicate as an agent.

Because the first, second and third form of a cut can be same.

Frame the sentence in a passive voice.

So the sentence is changed in passive voice.