Expressing Consequences Formally
To talk about logical consequences in Spanish, you might already use common phrases like por eso (that is why) or así que (so). In formal or written contexts, you will often encounter de ahí que ("hence" or "that is why").
| hence, that is why (+ subjunctive) | de ahí que |
Unlike most other consecutive connectors, de ahí que always triggers the subjunctive.
| It is very hot, that is why the farmer needs more irrigation. | Hace mucho calor, de ahí que la agricultora necesite más riego. |
Why the Subjunctive?
It might seem strange to use the subjunctive for a consequence that is actually happening. With de ahí que, the focus is on the logical connection between the cause and the result, rather than asserting the result as new information. The consequence is treated as an understood outcome.
This structure is common when discussing technical topics like agriculture.
| There is a lot of erosion, hence the land is not fertile. | Hay mucha erosión, de ahí que la tierra no sea fértil. |
Notice how the verbs following de ahí que take their present subjunctive forms (use, compre, sea).
| The crop has a pest, hence the farmer uses this pesticide. | El cultivo tiene una plaga, de ahí que la agricultora use este pesticida. |
| The land is not fertile, that is why the farmer buys fertilizer. | La tierra no es fértil, de ahí que el agricultor compre fertilizante. |
| This crop needs water, hence irrigation is important. | Este cultivo necesita agua, de ahí que el riego sea importante. |
