Ago vs. Before: The Ultimate Showdown (Choosing the Right Word)
The key difference between 'ago' and 'before' lies in their reference points. 'Ago' always measures time backward from the *present moment*, while 'before' measures time backward from *another specified past event or point*.
- âĻ Rule 1: 'Ago' = From NOW: Use 'ago' when counting back from the present. It always pairs with the Simple Past tense. Correct: I met him two days ago. (Meaning: two days before *now*). Incorrect: I had met him two days ago. (Unless 'ago' is used incorrectly with Past Perfect).
- âĻ Rule 2: 'Before' = From ANOTHER Past Point: Use 'before' when counting back from a specific past event or when referring to an unspecified earlier time. It often pairs with Past Perfect. Correct: He had already left before I arrived. (His leaving was before my arrival). Correct: I had never seen such a beautiful sunset before. (Unspecified earlier time).
- âĻ Rule 3: 'Before' as Conjunction/Preposition: 'Before' can introduce a clause or phrase, 'ago' cannot. Example: Finish your homework before you go out. (Conjunction) Example: The car stopped right before the pedestrian. (Preposition)
Select the option that correctly replaces the underlined part of the sentence: "By the time I reached the cinema, the movie had started ten minutes **ago**."