What are some common idiomatic expressions that use conjunctions?

There are several common idiomatic expressions that use conjunctions. Here are a few examples:

1. "In the blink of an eye": This expression means that something happens very quickly or suddenly. The conjunction "in" is used to indicate a short period of time.

2. "Come rain or shine": This expression means that something will happen regardless of the circumstances or weather conditions. The conjunction "or" is used to present two contrasting options.

3. "Neither here nor there": This expression means that something is not relevant or important to the current situation. The conjunction "nor" is used to present a negative alternative.

4. "By hook or by crook": This expression means that someone is determined to achieve something by any means necessary. The conjunction "or" is used to present two possible options.

5. "Between a rock and a hard place": This expression means that someone is faced with a difficult decision or situation where both options are unfavorable. The conjunction "and" is used to connect two contrasting elements.

6. "Out of sight, out of mind": This expression means that when something or someone is not visible or present, they are easily forgotten. The conjunction "out of" is used to indicate a change in state or condition.

7. "All or nothing": This expression means that someone is willing to accept only complete success or failure, with no middle ground. The conjunction "or" is used to present two contrasting options.

8. "Better late than never": This expression means that it is preferable to do something late rather than not doing it at all. The conjunction "than" is used to compare two options.

These are just a few examples of idiomatic expressions that use conjunctions. There are many more in the English language, each with its own unique meaning and usage.