[ipqk]

English also doesn't have a (proper) future tense, but you would still need to learn how to talk about the future using the modal 'will'.

[deanc]

In English there is at least the means grammatically to express you're referring to the future (I'm going to the store, I will go to the store, I'm going to go to the store). In Finnish, it's entirely contextual and you can throw in timing words to help.