eg. All carriage was done by pack animals in olden days.
I am having a question whether the object after all should be in the form of plural or single? I read some books/newspapers where they put both plural and single form of the object right behind all?
3. conveying of items or merchandise from one place to another.
Here carriage is a singular noun, so 'was done' is correct.
Originally Posted by Rover_KE
Then, do you agree that the object after all can both be in the form of plural or single? If yes, what are the differences in usage?
It depends on the context.
In this thread carriage means transportation, so is singular.
In the sentence 'All carriages were horse-drawn', carriages is the plural of the vehicle so takes the plural form of the verb.