Questions & Answers about Jeg bliver glad, når jeg ser min mor i stuen.
Bliver means “become / get”, so Jeg bliver glad focuses on a change of state: “I get happy / I become happy.”
Jeg er glad is more like a state description: “I am happy.” Both can be possible in real life, but the sentence you gave emphasizes that you start feeling happy when the condition happens.
It’s present tense. Danish often uses the present tense for general truths and repeated situations, and it can also cover “future-like” meaning depending on context. Here it’s a general/typical situation: “I get happy when I see my mom…”
Når is used for repeated/typical situations or general conditions (“whenever/when”).
Da is typically used for a single, completed event in the past (“when (that one time)”).
So:
- Jeg bliver glad, når jeg ser min mor… = whenever I see her (in general)
- Jeg blev glad, da jeg så min mor… = I got happy when I saw her (that time)