Desde Que: Does It Mean Since or Provided That in Portuguese?
Use tense and context to distinguish a starting point from a condition. Original examples and explained practice.
Real Life Portuguese · 5 min read · Updated November 2, 2026
The short answer
Desde que can introduce the time when something began, or a condition that must be satisfied. Desde que cheguei and desde que você avise do different jobs. The surrounding meaning and verb form help you hear whether the speaker is telling you since when or saying provided that.
Start with the situation
Original written teaching examples, not transcripts or new recordings
Use desde que for the start of a continuing situation
Desde que followed by an event can locate the starting point of another situation. Desde que cheguei connects what has happened afterward to the arrival. The arrival is presented as an actual reference event in this use. You are not imposing a condition on whether the later activity is allowed. Include enough of the main clause to show what continued or changed from that point.
Desde que cheguei, estou tentando falar mais português.
Since I arrived, I have been trying to speak more Portuguese.
Não o vejo desde que ele se mudou.
I have not seen him since he moved.
Use desde que with a subjunctive condition
Desde que can also mean provided that or as long as. The clause sets a requirement rather than a starting date. In a basic present conditional frame, a subjunctive such as avise or chegue helps signal that meaning. The main clause states what is possible or acceptable under the requirement. This is a useful distinction because English since does not normally express this provided-that meaning.
Pode vir, desde que avise antes.
You can come, provided that you let me know beforehand.
Compare the event with the requirement
Desde que ele chegou describes a starting event presented as having occurred. Desde que ele chegue cedo can set a condition that he arrive early. The similar sound should not hide the difference in role. Ask whether the speaker is locating a period or restricting an option. That meaning check is stronger than trying to translate desde que as one fixed English connector in every sentence.
Eu ajudo, desde que você me explique o problema.
I will help, provided that you explain the problem to me.
Do not copy every English since into desde que
English since can introduce a reason: since it is raining, let us stay in. Portuguese can use já que or porque for that causal relationship. Desde que would invite a different temporal or conditional reading. Identify the intended relationship first: start of a period, requirement or reason. The fact that English uses one word for more than one of these relationships does not make the Portuguese expressions interchangeable.
Já que está chovendo, vamos ficar em casa.
Since it is raining, let us stay home.
Clarify the condition or starting point explicitly
If your first attempt is ambiguous, replace the phrase with something clearer. A partir do dia em que can spell out a starting point, while contanto que can reinforce a provided-that condition. You do not need a longer phrase every time, but paraphrasing helps you check your own meaning. In conversation, explain the practical requirement rather than letting someone mistake it for a report of a past event.
Pode usar a sala, contanto que deixe tudo organizado.
You can use the room, provided that you leave everything tidy.
Try it with your own words
Say or write a Portuguese answer before opening the suggestion. Other natural answers can work; compare the meaning and situation, then read the explanation.
Original practice: Say you have been cooking more since you moved.
Show a possible answer and explanation
Desde que me mudei, estou cozinhando mais.
The move is the starting event for the later pattern. This desde que does not impose a requirement on another person.
Original practice: Allow a visit on the condition that the visitor confirms first.
Show a possible answer and explanation
Pode vir, desde que confirme antes.
Confirme is subjunctive in a conditional frame. The clause gives a requirement, not a date from which the visit has continued.
Original practice: Translate causal since in Since it is late, let us go.
Show a possible answer and explanation
Já que está tarde, vamos embora.
The relationship is a reason. Desde que would suggest a starting point or condition instead of this straightforward causal link.
Original practice: Explain the difference between desde que chegou and desde que chegue cedo.
Show a possible answer and explanation
The first can mark since an actual arrival; the second can mean provided that the person arrives early.
The verb forms and the main clause support different relationships. Listen for an established event versus a requirement.
Try it with your own example
Say when a situation began, then state a separate condition for a plan. Keep practicing with the Real Life Portuguese app