Answer:

Subordinating conjunctions are conjunctions that are used at the beginning of subordinate clauses.

Some examples of these conjunctions are; although, after, before, because, how, if, once, since, so that, until, unless, when etc.

Here are examples of their use;

Although

Although—means "in spite of the fact that":

•He came to work, although he felt sick.

After

After—shows "subsequently to the time when":

•I always tell my daughter that she can have dessert after she eats her dinner.

Before

Before—shows "earlier than the time that":

•Before he contacted me, I was going to call him.

Because

Because—means "for the reason that":

•I love kittens because they are so cute.

How

How—means "the way in which":

•He explained how he completed it in a few days.

If

If—means "in the event that":

•You can watch TV if you finish your homework.

Once

Once—indicates "at the moment when":

•Once the light came on, we all shouted with joy.

Since

Since—means "from the time when":

•I've been a dancer since I was young.

So

So that—means "in order to":

•He finished his work as fast as possible so that he could leave early.

Until

Until—means "up to the time that":

•She didn't know she was a talented singer until she sang in the school concert.

Unless

Unless—means "except, on the condition":

•You will not pass the exam unless you work harder.

When

When—means "at that time":

•When I came in the room, everyone looked at me.