~ta ra / ~たら volitional


I'd like to say

> When I'll pass the test, I will be glad/happy.

I came up with

> テストが合格したから、嬉しです。

Is it correct?




嬉しい, you need an extra い at the end there :P

You're asking about たら ending, but not using it anywhere. You have 合格したから
where the から would mean "because". The actual verb conjugation you have here
is 合格した, and the から isn't needed for what you want. Can you see how you can
change 合格した to use a ～たら ending instead?

