Replacing は/が/を:
With other particles (で, に, と, から, etc.):
With verbs (~さえすれば / ~さえしない):
With て-form (conditional nuance):
The particle さえ means "even" and is used to highlight an extreme or unexpected example, implying that if this case is true, then all other (less extreme) cases are certainly true as well. It often carries a tone of surprise or emphasis.
さえ replaces particles like は, が, or を to emphasize that something extreme or unexpected applies. In negative sentences, it translates naturally as "not even."
The implication is that if even this extreme case holds, then less extreme cases obviously do too. For instance, "even children know it" implies adults certainly know it as well.
When replacing で or に, さえ is typically added after the particle: ここでさえ (even here), かれ彼にさえ (even to him).
When combined with a conditional ば-form, さえ…ば expresses that one condition alone is sufficient – "if only" or "as long as."
With verbs, the pattern is Verb[ます-stem] + さえ + すれば:
This pattern emphasizes that nothing else is needed beyond the stated condition.
Like も ("also/even"), さえ adds emphasis, but さえ is stronger and highlights a more extreme or surprising case. すら is a more literary synonym of さえ with the same meaning of "even."