Lesson 009

Difference between ‘ before ‘ and ‘ ago

The word  ‘ ago ‘  is used as an adverb and has one primary definition. It is used with past tense and a time expression to count back from the present. While the word ‘before ‘ can be used in three different ways , as a preposition , a conjunction and an adverb.It is used with a past tense to count back from a past moment.It can also be used to mean ‘ at any time before now/ then’. With this meaning , it can be used with both present and past perfect tenses.

Examples :

1. She left home 10 minutes ago .

2. Have you been here before ?

3. He had to leave before his appointment time was due.

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