Question 1

Why does excepto si use the indicative hay instead of the subjunctive?

Accepted Answer

Even though similar exception phrases like a menos que (unless) always force the subjunctive, excepto si strictly follows the rules of si (if) clauses. Since this is a realistic, possible condition in the present, si must be followed by the present indicative, which is hay.

Question 2

How would this sentence change if I used a menos que (unless) or excepto que?

Accepted Answer

Both of those phrases express the same idea as excepto si, but they always require the subjunctive mood. If you swapped the phrase, you would have to change the verb to match: A menos que haya mucho tráfico or Excepto que haya mucho tráfico.

Question 3

Why use the future tense llegaremos instead of the present llegamos for a specific time?

Accepted Answer

While the present tense is often used for fixed schedules in Spanish, using the future tense llegaremos here emphasizes that the arrival is a prediction dependent on an outside condition (the traffic). It feels more like an estimated promise than a guaranteed timetable.

Question 4

Does the comma placement change if we reverse the sentence order?

Accepted Answer

Yes. In Spanish, when a conditional clause starting with si (or excepto si) comes at the beginning of a sentence, you use a comma to separate it from the main clause. If you flip it to put the condition at the end (Llegaremos a las nueve excepto si hay mucho tráfico), you generally drop the comma.

Excepto si hay mucho tráfico, llegaremos a las nueve.

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