“They have a screened-in porch in back. ”

English Lesson: They have a screened-in porch in back.

You visited your boss's house, which was nice. Now you're describing the house to your boyfriend. You tell him about an outdoor area that's protected from bugs.

They have a screened-in porch in back.

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a screened-in porch

When something is "screened in", it's surrounded by a screen to keep out insects. A "screen" is like a fine net made out of thin metal wires.

Some homes have a "screened-in porch", which is an outdoor seating area that's surrounded by screens.

in back

"In back" can describe the area behind someone's home.

The front yard has a wide lawn and there's a garden in back.

When you're talking about a store, "in back" means a room that's further away from the front door. Often it means an area of the store where only employees are allowed to go.