A conjunction joins words or groups of words in a sentence.
Subordinating Conjunctions
Connects words, phrases, or clauses that are independent or equal using
"although", "because", "if", "unless",
or "whether".
Although - in spite of the fact that
Because - for the reason that
If - in the event that
Unless - except; on the condition that
Whether - if it is true or not
·   She showed up, although she felt sick.
·   Although my mom told me to come home early, I stayed out late.
·   Because he was smart and worked hard, he was able to make a lot of
money.
·   They stopped building the house because it
was pouring.
·   If it is sunny tomorrow, we can go to the beach.
·   If I receive a promotion, you will be the first to know.
·   You will not pass the exam unless you
get a score of 80 or higher.
·   Unless you ask her, you will never know.
·   We will have a picnic whether it rains
or not.
·   It is time to decide whether we should
take action.
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