cannot/shouldn't be ~ing; cannot/shouldn't (stay/remain/etc); cannot/shouldn't waste time~ ing; cannot afford to; cannot help ~ing
When I think about the future, (I realize) I can't keep doing this kind of work forever.
Because she was acting so selfishly, I couldn't resist saying something to her.
Once I realized that I loved him, I couldn't be just a friend anymore.
I put all the examples along with the meaning into flashcards to study just in case you forget. (I suggest downloading the app version for brainscape) With this you can even study on your phone!
Feel free to use this flash card deck I update regularly.
This grammar is really for intermediate-advanced learners. If you are looking to know where to start in Japanese and building a good foundation check out this blog post it.
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