i don't know why no-one has answered this, but the answer is no. Some do and some do not and some do in the present tense, but not in the past tense or if habitual. (E.g despues de que, en cuanto, cuando, hasta que). Some change depending on certainty. such as aunque or if hypothetical, such as "if" which is indicative in the present tense, but is subjunctive when you change it to a hypothetical phrase, such as  " if you had enough money, would you take a trip around the world?' which takes the subjunctive in the past tense. It seems to take a fair amount of study to figure it all out.....................as i struggle through intermediate level.