as to who might have vs as to who might have been

Both phrases are correct, but they are used in different contexts. 'As to who might have' is used when discussing possibilities or potential actions of a person, while 'as to who might have been' is used when referring to the past actions or existence of a person.

Last updated: March 26, 2024 • 609 views

as to who might have

This phrase is correct and commonly used in English when discussing possibilities or potential actions of a person.

This phrase is used to introduce a discussion about who could have done something or who might be responsible for a certain action.

Examples:

As to who might have taken the last piece of cake, it remains a mystery.
We are still unsure as to who might have leaked the information.
As to who might have forgotten to lock the door, we will never know.
The detective is investigating as to who might have committed the crime.
As to who might have won the competition, we will find out soon.

Show examples from the web [+]

As yet, we've got no leads as to who might have done this to him.
Any thoughts as to who might have killed him?
No notion as to who might have done such a thing?
Any leads yet as to who might have done this to Dr. Zelenka?
I'm just curious as to who Justin Guthrie might have collaborated with to rob the diamond exchange.

Alternatives:

regarding who might have
concerning who might have
about who might have
in terms of who might have
with respect to who might have

as to who might have been

This phrase is correct and commonly used in English when referring to the past actions or existence of a person.

This phrase is used to introduce a discussion about who could have existed or done something in the past.

Examples:

As to who might have been responsible for the accident, we will never know.
We are discussing as to who might have been involved in the project.
As to who might have been the first to discover the treasure, it is still a mystery.
The historian is researching as to who might have been the author of the ancient text.
As to who might have been present at the meeting, we have a list of attendees.

Alternatives:

regarding who might have been
concerning who might have been
about who might have been
in terms of who might have been
with respect to who might have been

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as to who might have vs as to who might have been