Contrasting Facts with "Mientras que"
When comparing generations, cultures, or mindsets, you often need to highlight how two things are different. To say "while" or "whereas" to contrast two direct facts, use the phrase mientras que.
Because you are declaring established, real facts—not hypotheticals or unknowns—the verb following mientras que stays in the indicative mood.
| My grandparents are very conservative, while my parents are more liberal than them. | Mis abuelos son muy conservadores, mientras que mis padres son más liberales que ellos. |
| The mindset of the city is liberal, while the countryside is very traditional. | La mentalidad de la ciudad es liberal, mientras que el campo es muy tradicional. |
Comparing Lifestyles and Actions
You can use mientras que to contrast not just descriptions, but entire actions and life choices, such as one group seeking stability while another wants to start a business (emprender).
| They seek stability, while we prefer to start a business. | Ellos buscan la estabilidad, mientras que nosotros preferimos emprender. |
| Young people want to start a business, while adults prefer stability. | Los jóvenes quieren emprender, mientras que los adultos prefieren la estabilidad. |
Contrasting Past and Present
You can also contrast two different time periods to show how customs or mentalities have changed. Since you are stating the reality of both the past and the present, you continue to use the indicative mood for both halves of the sentence.
| When we were young, that custom was common, while today it is rare. | Cuando éramos jóvenes, esa costumbre era común, mientras que hoy es rara. |
| When he was young, he settled for little, while today he seeks wealth. | Cuando él era joven, se conformaba con poco, mientras que hoy busca la riqueza. |