problem
The German word "Problem" is a direct cognate of the English word "problem". It is used in the same way as in English to describe a situation or issue that needs to be solved or dealt with. It can also be used in a more general sense to refer to any kind of difficulty or challenge.
We have a problem.
This is a straightforward sentence often used to express an existing issue or difficulty. 'Wir' translates as 'we', 'haben' as 'have' and 'ein Problem' as 'a problem'.
The problem is with you.
This sentence suggests that the responsibility or cause of the problem lies with the person being addressed. 'Das Problem' means 'the problem', 'liegt' means 'lies' or 'is', and 'bei dir' means 'with you'.
What is the problem?
This is a question generally used when someone wants to know the issue or what is wrong. 'Was' translates as 'what', 'ist' as 'is', and 'das Problem' as 'the problem'.