what is the meaning and when do you we use this "there is been a misunderstanding"
espicially this part "there is been" when do we use this tense and how this is different fron the tense "there was a misunderstanding"
Firstly, the phrase should be:
There has been a misunderstanding
This usually implies that the misunderstanding has just happened, or has just affected events. For example:
Person A: I thought I was meant to bring one box, not two!
Person B: There has obviously been a misunderstanding.
There was a misunderstanding.
implies that the misunderstanding was in the past. For example:
Person A: Why did you not bring two boxes yesterday?
Person B: There was a misunderstanding.
In practice, the difference is not always that clear cut, but as a rule of thumb it is quite useful:
"There is" and "There has" are both contracted to "There's", and it is very easy for an English language learner to mix them up. "There's/There has" can only be followed by a past-participle verb: "[There's/There has] been a misunderstanding". "There's/There is" can be followed by a number of things, including, in this case, a noun phrase: "[There's/There is] a misunderstanding".