Learn Spanish (Spain): Ellas vivirían con mucho lujo. - They would live with a lot of luxury.

To form the conditional tense for regular verbs, you start with the full infinitive and add the conditional endings. Here, we take the infinitive vivir (to live) and add the ending for they/them, which is -ían, to get vivirían (they would live).

Why is there an accent mark on the i in vivirían?

Every single ending in the Spanish conditional tense starts with an accented í (-ía, -ías, -íamos, etc.). This accent mark tells you to stress that vowel, making sure it is pronounced as a separate syllable: vi-vi-RÍ-an.

Why do we use mucho here instead of muy?

We use mucho because lujo is a noun meaning luxury. Mucho means a lot of or much and must match the noun in gender and number (masculine singular here). If we wanted to use muy (very), we would need an adjective, like muy lujoso (very luxurious).

Is con mucho lujo a common way to say luxuriously?

Yes! While you could use the adverb lujosamente (luxuriously), Spanish speakers frequently use con plus a noun to describe how something is done. Con mucho lujo (literally with much luxury) is a very natural and common phrasing.