how long
The phrase "how long" is commonly used in English to inquire about the duration or physical length of something.
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Definition
A2General
(common)Used to ask about the duration of time something takes or has taken.
Example
- How long have you been waiting?
- How long will the meeting last?
A2Measurement
(common)Used to ask about the physical length of an object.
Example
- How long is this rope?
- How long is the bridge?
Similar
Terms that have similar or relatively close meanings to "how long":