[I] am ~ing / [he/she/it] is ~ing / [they] are ~ing
「でいる」の訳し方は、その状況によって変わりますが、大体「am ~ing / is ~ing / are ~ing」で訳することが出来ます。
例:
このままでいる
I am staying where I am.
She is keeping things as they are.
Things are staying the same.
やるつもりでいる
I am planning to do it.
He is intending to do it.
They are intending to do it.
お役に立てたら幸いです。