What is the Opposite of second-person singular past tense to see?

The opposite of "second-person singular past tense to see" is a bit tricky to define, as it depends on what you mean by "opposite."

Here are a few interpretations and their corresponding "opposites":

1. Opposite in grammatical tense:

* Second-person singular past tense: "You saw."

* Opposite tense:

* Second-person singular present tense: "You see."

* Second-person singular future tense: "You will see."

2. Opposite in meaning:

* Second-person singular past tense to see: "You saw something."

* Opposite meaning: "You did not see something." (This could be expressed in various tenses, such as "You didn't see," "You haven't seen," etc.)

3. Opposite in grammatical person:

* Second-person singular past tense: "You saw."

* Opposite person:

* First-person singular past tense: "I saw."

* Third-person singular past tense: "He/She/It saw."

Ultimately, the "opposite" depends on your specific context and what aspect of the phrase you're trying to contrast.