False
We use the subjunctive mood to express desires, doubts, the unknown, the abstract, and emotions. In this way, subjunctive sentences often have parts linked by a relative pronoun (que, quien, como). For instance: Yo quiero que tú laves los platos (I want you to do the dishes).
On the other hand, we can get phrases using que but not in the subjunctive mood, for instance:
1. Yo tengo que ir (I have to go)
2. Ven hoy con tal que no vengas solo (Come today as long as you don't come alone)