Explanation
Expresses that one cannot (or must not) do something due to responsibility, social pressure, etc.
Formation
Verb-dictionary form + わけにはいかない
Detailed explanation
The ～わけにはいかない grammar point is used to express that you cannot afford to do something or are not allowed to do it. It often implies a sense of responsibility, moral/social obligation, or external pressure that prevents you from doing it.
Examples
Shiken ga chikai kara, asobu wake ni wa ikanai.
Since the exam is close, I can't afford to just play around.
Tanaka-san ga matteiru node, okureru wake ni wa ikanai.
Mr. Tanaka is waiting, so I absolutely must not be late.
Kodomo-tachi no tame ni, kono shigoto o yameru wake ni wa ikanai.
For the sake of my kids, I can't afford to quit this job.
Kono mondai wa juuyou dakara, mushi suru wake ni wa ikanai.
This issue is important, so I can't simply ignore it.
Practice
Grammar content sourced from hanabira.org.