Questions & Answers about Jag blir glad av kaffe.
Why is it blir and not är?
Bli(r) means “become/get,” so it focuses on the change caused by coffee. Jag blir glad av kaffe = “Coffee makes me happy / I get happy from coffee.” If you use är (am), you describe a state, not a cause: Jag är glad (I am happy). To say you’re happy about something (not that it causes the change), use är + glad över/för: e.g., Jag är glad över kaffet (I’m happy about the coffee).
What does av mean here?
Here av means “from/because of/by,” marking the cause. It’s common with bli + adjective to express what triggers a change: Jag blir trött av värme (I get tired from heat), Hon blir arg av orättvisa (She gets angry at injustice).
Can I say Kaffe gör mig glad instead? Is there a difference?
Yes. Kaffe gör mig glad is perfectly natural and means the same. With gör, you use an object (mig) and an adjective; with blir, the subject changes state. Nuance: gör highlights the cause; blir highlights the change in the subject.
Is the word order flexible? Can I say Av kaffe blir jag glad?