An idiom is a phrase where the words together have a meaning that is different from the dictionary definitions of the individual words, which can make idioms hard for ESL students and learners to understand.
Here is a list of 10 common English idioms used in the United States.
These are great posts! I did find that there are a few nuances that could be missed, though, such as:
■ Bend over backwards
To do everything you can, especially to help someone.
The nuance here is the idea that someone literally bent over backwards or contorted hisself/herself in order to help. This usually implies that there was some inconvenience suffered on the part of the person helping.
There's a degree in helpfulness:
1. I helped him.
2. I went out of my way to help him.
3. I bent over backwards to help him.