Raining Cats and Dogs

Idiom: Raining Cats and Dogs

Example 1:

I didn't expect this kind of weather. It's raining cats and dogs and I forgot my umbrella. Needless to say, I'm going to get soaked on my way home. Hopefully I won't catch a cold!

Example 2:

Looks like we have to reschedule the picnic. Forecasters predict really heavy rains this weekend. We won't have any fun in the park if it's raining cats and dogs!

Meaning: Raining cats and dogs is a playful expression to describe very heavy rain. This expression is usually used with "it."

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Barking Up The Wrong Tree

Idiom: Barking Up The Wrong Tree

Example 1: 

Lisa: Did you see that new guy in class? He is SO cute!!

Tina: Oh, you mean James? Yes, he is very handsome! He is my brother's friend.

Lisa: I want to go out on a date with him.

Tina: Lisa, you are barking up the wrong tree!!

Lisa: What do you mean?

Tina: He is gay. He isn't interested in girls!

Example 2:

News Anchor: The police investigation revealed that Mr. Thompson was not guilty of committing the burglary. It was actually his neighbor who had committed the crime. The police finally realized that they were barking up the wrong tree by accusing Mr. Thompson.

Meaning: To waste your effort pursuing the wrong thing, person or path.

www.languagesystems.edu