Adverb clauses modify the verb in the main clauses. They say something about how, when, where or why that action occurs,
and are always introduced by a conjunction:
(indicative) main clause | conjunction |
(indicative or subjunctive) adverbial clause |
Siempre me siento feliz I always feel happy |
cuando when | me llamas. you call me. |
The subjunctive is used in adverb clauses when the action described in the clause is anticipated or hypothetical (a reservation, a condition not yet met, a mere intention).
Here's a list of the conjunctions used in this exercise:
Conjunction | meaning | subjunctive? |
a menos que | unless | always followed by the subjunctive |
antes (de) que para que sin que |
before so that, in order that without |
always followed by the subjunctive
(but use infinitive if both clauses share the subject) |
siempre que cuando después (de) que hasta que |
whenever, as long as when after until |
use subjunctive for anticipated events (future) |
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