The Invariable "Haber"
The impersonal verb haber expresses existence (like hay for "there is" or "there are").
In compound tenses like the present perfect ("there has/have been"), always use the singular form ha habido. Avoid the common mistake of making it plural (han habido), even with plural nouns.
| Today there have been many complications. | Hoy ha habido muchas complicaciones. |
| Today there have been problems with the capacity. | Hoy ha habido problemas con el aforo. |
This strict singular rule also applies to phrases like ir a + infinitive. Always use va a haber ("there is/are going to be"), never van a haber.
| Today there are going to be several delays. | Hoy va a haber varias demoras. |
| There are going to be complaints from the sponsors. | Va a haber quejas de los patrocinadores. |
Planning for Complications
When managing logistics, it is always best to have a backup plan. The phrase por si (in case) is incredibly useful for discussing precautions and contingencies.
| in case | por si |
Notice how por si pairs naturally with present or present perfect tenses to prepare for unexpected issues.
| Check the contract in case there have been complications. | Revisen el contrato por si ha habido complicaciones. |
| There is going to be security in case there is an altercation. | Va a haber seguridad por si hay algún altercado. |
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