If I build a gingerbread house....
[sentence that describes the condition "if"]
If next week is Winter Break...
[sentence that describes the condition "if"]
Until I see my relatives...
[sentence that describes the timed condition "until"]
Until 2:20pm on Friday...
[sentence that describes the condition "until"]
Until it's time to open my presents...
[sentence that describes the timed condition "until"]
Until midnight on December 31st....
[sentence that describes the timed condition "until"]
If I get a gift from my grandparents...
[sentence that describes the condition "if"]
If my parents ask for help with decorating the tree...
[sentence that describes the condition "if"]