Is the how long and how far is the same thing? I am confused about it.
'How long' and 'how far' are similar but are used in different circumstances. You could use them interchangeably in a scenario like this: How long is the journey to London? / How far is it to London?
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'How long' and 'how far' are similar but are used in different circumstances.
You could use them interchangeably in a scenario like this:
How long is the journey to London? / How far is it to London?
However, it could be read as 'How long [in time] is it to London?' so it's not perfect.
In general, use 'how long' when you are talking about an object and want to