Breakdown of Leo la carta sin que el remitente anónimo lo sepa.
leer
to read
la carta
the letter
saber
to know (facts) / to hear from (someone)
que
that / than
Questions & Answers about Leo la carta sin que el remitente anónimo lo sepa.
Why do we use sin que and the subjunctive sepa here instead of just sin saber?
Because the subject changes. The person reading the letter is "I", but the person who doesn't know is the sender (el remitente). When the subject changes, you must use sin que followed by the subjunctive (sepa). If the same person were doing both actions (like "I read the letter without knowing who sent it"), you would use sin plus the infinitive: Leo la carta sin saber...
What does the lo in lo sepa refer to?
Lo translates to "it" and refers to the entire fact that you are reading the letter. In English, we can often just say "without the sender knowing," but Spanish requires a direct object pronoun here to represent exactly what it is that they don't know.
Is remitente always a masculine word?
No, it changes depending on the person. Nouns ending in -ente are usually invariable, meaning the noun itself stays the same for both men and women. We know this specific sender is treated as masculine because of the masculine article el and the masculine adjective anónimo. If the sender were known to be a woman, it would be la remitente anónima.
Why does the subjunctive of saber (sepa) look so different from its indicative forms?