Learn Portuguese (Portugal): Foi ontem quando ele compreendeu a gravidade. - It was yesterday when he understood gravity.

Foi ontem quando ele compreendeu a gravidade.

It was yesterday when he understood gravity.

Breakdown of Foi ontem quando ele compreendeu a gravidade.

Questions & Answers about Foi ontem quando ele compreendeu a gravidade.

Why do we use Foi ... quando instead of just saying Ele compreendeu a gravidade ontem?

This is a cleft sentence used for emphasis. By framing the time with Foi (It was) and quando (when), you are strongly highlighting that it happened yesterday and not at any other time. It changes the focus from the action itself to the specific time it occurred.

Why is the first verb Foi in the past tense, rather than using the present tense É?

In Portuguese emphatic structures, the verb ser usually agrees with the tense of the main verb. Because compreendeu is in the past tense (Pretérito Perfeito), the introductory verb must also be in the past tense (foi). If the main action were happening now, you would use é.

Could I say Foi ontem que ele compreendeu instead of using quando?

Yes, and it is actually more common! In everyday Portuguese, que is frequently used as a universal connector in these emphatic structures. Foi ontem que sounds very natural to native ears, while using quando is perfectly correct but sounds slightly more formal or explicit about the time element.

Does gravidade here refer to physics (gravity) or to the seriousness of a situation?

It can mean both, exactly as it does in English. Depending entirely on the context, he might have finally understood the laws of physics (like Isaac Newton), or he finally realized the severe reality of a difficult situation.