The tree that has just fallen/The tree falling

[Vladv1]

The tree that has just fallen down has led to traffic jams.
Can this be reduced to "The tree just falling down has led to traffic jams", or without "just" "The tree falling down has led to traffic jams"?

 

[Rover_KE]

It's possible, but a native English-speaker wouldn't say it like that - with or without 'just'.

If you want to reduce the word-count say 'The fallen tree has led to traffic jams'.

 

[Vladv1]

It's possible, but a native English-speaker wouldn't say it like that - with or without 'just'.

If you want to reduce the word-count say 'The fallen tree has led to traffic jams'.

Is this correct? The car (that has crashed)crashing the lampost has caused a traffic jam. And it can't be reworded like " The crashing car has caused a traffic jam" can it?

 

[emsr2d2]

Is this correct?

The car (that has crashed) space here crashing into the lamppost has caused a traffic jam.

Both are possible ("that has crashed" and "crashing").
With the first, the blame is on the car, with what it did as supplementary information.
With the second, "The car crashing into the lamppost" describes the entire situation that led to the jam.
Remember to put a space after closing brackets.

And It can't be reworded like to "The crashing car has caused a traffic jam", can it?

No, it can't.
As a learner, don't start sentences with "and" or "but".
We don't "reword like". We "reword to". If you really want to use "like", you'd need to say "It can't be reworded to something like ...".
Don't put a space after opening quotation marks.
Always put a comma before a tag question.

 

[jutfrank]

The tree that has just fallen down has led to traffic jams.
Can this be reduced to "The tree just falling down has led to traffic jams", or without "just" "The tree falling down has led to traffic jams"?

No. For the reduction that you're asking about—where it's like removing 'that has'—you have to use fallen, not falling, to show that the action is complete. If you use falling, it means the tree is in the process of falling. The sentence attributes the tree as the direct cause of the traffic jam.

The version of the sentence with falling can be understood in a different way, where falling is the head of a gerund phrase denoting the entire past action of falling as the direct cause of the traffic jam.

 

[Vladv1]

Both are possible ("that has crashed" and "crashing").
With the first, the blame is on the car, with what it did as supplementary information.
With the second, "The car crashing into the lamppost" describes the entire situation that led to the jam.
Remember to put a space after closing brackets.

No, it can't.
As a learner, don't start sentences with "and" or "but".
We don't "reword like". We "reword to". If you really want to use "like", you'd need to say "It can't be reworded to something like ...".
Don't put a space after opening quotation marks.
Always put a comma before a tag question.

Can this reduction be done in a non-essential relative clause. An example- My car, which crashed the tree, caused the traffic jam/My car, crashing the tree, caused the traffic jam.

 

[emsr2d2]

Cars don't crash trees. They crash INTO trees.
I made that correction already in the quote box in post #4.