Learn Spanish (Latin America): El enjambre silvestre debe de ser enorme.

El enjambre silvestre debe de ser enorme.

The wild swarm must be huge.

Breakdown of El enjambre silvestre debe de ser enorme.

Questions & Answers about El enjambre silvestre debe de ser enorme.

Why is it debe de ser and not just debe ser?

The preposition de changes the meaning from obligation to probability. Debe ser means 'must be' as a requirement or duty. Debe de ser, which is the focus here, means 'must be' as a strong deduction or guess (for example, you see a massive beehive and assume the swarm is huge).

If I want to say the swarm is required to be huge, how does the sentence change?

You would simply remove the de and say debe ser enorme, or use tiene que ser enorme. Using deber without de expresses a strict requirement, whereas adding de marks the statement as a supposition.

Do native speakers ever mix up deber and deber de?

Yes, very frequently. In everyday Latin American Spanish, you will often hear people drop the de and just say debe ser enorme even when they mean it as a guess. However, keeping the de is the grammatically precise way to show you are making a deduction rather than stating an obligation.

Why use silvestre instead of salvaje for 'wild'?