Probability and conclusion: pot ser que, segur que, per tant, o sea

Doubt puts the subjunctive: pot ser que + subjuntiu — maybe: Pot ser que plogui, porta el paraigües. Confidence does not call it: segur que + indicative — surely: Segur que ve, mai falta a una festa. For example: “Pot ser que plogui, porta el paraigües” — Maybe it will rain, take the umbrella. A rule from the Catalan course: worked out on examples, not memorized as a wording.

Updated September 1, 2026 · Lingofly

How it works

Doubt puts the subjunctive: pot ser que + subjuntiu — maybe: Pot ser que plogui, porta el paraigües. Confidence does not call it: segur que + indicative — surely: Segur que ve, mai falta a una festa.

The conclusion draws the line: per tant — therefore, consequently: Ha plogut tres dies seguits; per tant, el camp està feliç. And the colloquial o sea — "that is, I mean" — explains and reassembles the thought: No m'agrada, o sea, m'agrada la idea, però no el preu. Two poles of certainty and the bridge between them.

Table

Probability and conclusion: pot ser que, segur que, per tant, o sea
expressionmoodexample
pot ser que + subjuntiudoubtpot ser que plogui
segur que + indicativeconfidencesegur que ve
per tantconclusionper tant, el camp està feliç
o seaclarificationo sea, la idea és bona

By example

  • Pot ser que plogui, porta el paraigües
    Maybe it will rain, take the umbrella
  • Segur que ve, mai no falta a una festa
    Surely he will come, he never misses feasts
  • Ha plogut tres dies seguits; per tant, el camp està feliç
    It rained three days in a row; consequently the field is happy

How the rule settles in your head

A rule is not memorized from an explanation. It is memorized from an attempt to use it and a mistake — that is why the app delivers it mixed in with words, not as a separate lesson: it resurfaces exactly where you forgot it.

Frequently asked

Probability and conclusion: how does it work in Catalan?

Doubt puts the subjunctive: pot ser que + subjuntiu — maybe: Pot ser que plogui, porta el paraigües. Confidence does not call it: segur que + indicative — surely: Segur que ve, mai falta a una festa.

What does it look like in an example sentence Catalan?

“Pot ser que plogui, porta el paraigües” — Maybe it will rain, take the umbrella. A rule is easier to test on sentences like this than to memorize as a wording: what surfaces in conversation is the sentence.

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Test the rule on examplesPractice