Choose the most appropriate preposition to fill in the blank:
I am going home the day ............. tomorrow.

Question

Accepted Answer

The correct option is 3:

The sentence requires a preposition that indicates a time relationship, specifically referring to a day that follows 'tomorrow'. The preposition "after" is used to denote a sequence in time, meaning 'subsequent to' or 'following' a particular point. In the context "I am going home the day _________ tomorrow," the speaker is clearly specifying a time frame that is subsequent to tomorrow—the day that comes after tomorrow. This phrase, "the day after tomorrow," is a standard and idiomatic way to refer to the day that is two days from now. Therefore, "after" functions perfectly as a preposition to connect the noun phrase "the day" with the reference point "tomorrow," establishing the correct temporal sequence.

The incorrect option is 1:

The preposition "in" is typically used to indicate periods of time (like 'in a month' or 'in the evening') or within a location, but it is not grammatically correct for specifying the day immediately following tomorrow. Using "in" would result in the non-standard and awkward phrase "the day in tomorrow," which does not convey the intended meaning of two days hence.

The incorrect option is 2:

The preposition "on" is used for specific dates or named days ('on Monday,' 'on the 5th of June'). While "tomorrow" is a specific day, "the day on tomorrow" is grammatically incorrect and is never used in English to express the sequential time being described. The correct structure for a single day reference point does not use "on" in this manner.

The incorrect option is 4:

The preposition "at" is used to refer to precise points in time ('at 3 p.m.', 'at noon') or specific locations. It is entirely unsuitable for connecting "the day" with "tomorrow" in a sequence. The resulting phrase, "the day at tomorrow," is meaningless in English grammar.