Expressing "ago" with hace
To talk about how long ago an event happened, use hace followed by a period of time. While it comes from the verb hacer (to make or do), in this context it translates directly to "ago".
You will usually place this time phrase at the end of a sentence that describes a completed past action.
| Who invented the telephone a century ago? | ¿Quién inventó el teléfono hace un siglo? |
| A famous scientist created the lightbulb a long time ago. | Un científico famoso creó la bombilla hace mucho tiempo. |
| The scientist was able to create the vaccine five years ago. | La científica pudo crear la vacuna hace cinco años. |
Talking about science and inventions
When discussing historical discoveries, you will frequently use vocabulary like la ciencia (science), el invento (invention), and el científico or la científica (scientist).
| This is the most important invention of science. | Este es el invento más importante de la ciencia. |
| Electricity came to the town thirty years ago. | La electricidad vino al pueblo hace treinta años. |
| The scientists made a new telescope two months ago. | Los científicos hicieron un telescopio nuevo hace dos meses. |
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