Learn English – prepositions used with DISTANCE

There are many kind of pronouns like personal pronoun, demonstrative pronoun, relative pronoun etc. Pronouns regardless of their classification can occur after preposition. The thing that needs to take care of is the case of a pronoun that comes after a preposition.

Notes from Fowler's Modern English Usage -

After a preposition the objective (accusative) form of a pronoun, where it differs from the subjective (nominative) form, must always be used.

For example -

i) Believe in him.

ii) Between us.

iii) For them.

This is especially important when two pronouns are linked by and or or. For example -

Between you and me (not I)

A gift from my brother and me (not I)

asked if there was any chance of him (not he) and Gina reconciling.

Some more examples -

Who is a relative or interrogative pronoun. Who is the subjective form, whose is the possessive form, and whom is the objective form. Now if I want to use that pronoun after a preposition, the objective form whom should be used according to the rule stated by Fowler.

To whom does it matter? (not who or whose)

Everybody is a indefinite pronoun. There is no difference between subjective form and objective form. In both form it's everybody, but the possessive form is everybody's

It's clear to everybody.

The demonstrative pronoun those has no difference in subjective form and objective form.

It concerns to those who failed to obtain the minimum qualifying marks.

Hope this helps....

There isn't any difference between "to wrap" and "to wrap up". The "up" can't even be really logically explained, which is perhaps why some people have not posted an answer. There is no concrete explanation or rule for when to add "up".

It's actually kind of nonsensical, because you're not applying the wrap in an upward direction, motion, or anything of the sort. It actually adds no additional information to the statement and does not change the meaning of anything. It's simply superfluous, unnecessary, and its addition is just a matter of personal preference.

The only additional implied meaning it can have in some situations is the implication of completeness. "Little Jimmy was all wrapped up in his blankets." By adding "up" here, it is loosely implied that Jimmy was entirely wrapped up in his blankets, covering him entirely. However, this does not concretely mean that if "up" was used here, then Jimmy must have been completely covered in his blankets.

Like I said, it's more a matter of personal preference to add "up" here, it doesn't hold any concrete meaning and is most likely technically incorrect, but widely used and acceptable to use.

To address the examples you provided. They are all technically correct/acceptable speech, but

Please wrap the tinfoil around the food.

would be perceived as very robotic. The reason why is because you're being very explicit with this sentence, instructing someone not just to wrap the food, but how to wrap the food with "around the food." It's very strict, explicit instruction that doesn't really need to be so explicit unless you are teaching someone how to wrap up food.