[verb (dictionary form)] + そばから [verb (た form)] + そばから
The grammar pattern そばから expresses the idea that as soon as one action is completed, it is immediately undone or rendered meaningless by another action. It conveys a strong sense of frustration or futility – the speaker feels that no matter how many times they do something, the result is immediately negated.
This pattern is almost always used to describe repetitive, frustrating situations where effort goes to waste. It is quite different from other "as soon as" patterns like 〜~たとたん or 〜~やいなや否や, which simply describe sequence. そばから specifically emphasizes the futility of the first action.
The verb before そばから is typically in the dictionary form or the た-form:
Both forms are used, though the dictionary form is slightly more common as it emphasizes the habitual or repetitive nature of the pattern.
Repeated futile actions:
The pattern inherently implies that the cycle keeps repeating. The speaker is expressing that no matter how many times the first action occurs, the second action immediately follows and undoes it.
Emphasizing frustration or exasperation:
Because of this nuance of futility, そばから is rarely used for positive or neutral events. It almost always carries a negative or exasperated tone.