Subordinating conjunctions (pakārtojuma saikļi) introduce a subordinate clause that depends on the main clause.
ka
that
jo
because
ja
if
kad
when
lai
so that, in order to
kaut gan
although
kamēr
while, until
Es zinu, ka viņš nāks.
I know that he will come.
Mēs paliksim mājās, ja līs lietus.
We will stay home if it rains.