toki! jan ale pi toki pona o a!

[mije Kewen]

toki! nimi mi li jan Kewen.
tenpo pini mute la mi kama sona e toki pona.
tenpo mute la mi toki ala kepeken ona.
tenpo ni la mi kama tawa lipu lawa pi toki pona. ona li pona mute tawa mi.
tenpo kama la mi lukin e lipu ni li toki tawa sina ale.

[jan Akesimun]

jan Kewen o kama pona.

[janMato]

jan mije Kiwen o!

sina tan ma seme?

sina pali e seme tawa mani?

sina jo ala jo e soweli tomo? sina jo la soweli li soweli seme?

[janKipo]

jan Kewen o. kama pona tawa lipu pi toki pona.
taso nimi sina li jan ala . sina nimi ala. tan ni la o sitelen e kulupu 'mi jan Kewen' anu 'nimi mi li nimi 'Kewen'.
ante la ni li pona mute.

[Mako]

jan Kewen o! kama pona tawa lipu ni. mi jan Mako. mi sona e ni: lipu ni li pana tawa mi e nimi Mako. mi kama e jan pi TP la mi pakala mute! mi tan ma tomo Sapansiko li tan ma Mewika. mi jo e jan sama mije wan. tenpo pimeja pini la jan mute li kama tawa tomo pi telo mute. jan mama mi li kama. jan pona mama li kama. jan ale li moku e moku mute e telo nasa mute. mi mute li kalama musi. kasi suli pi ma lete li pona mute li lon insa tomo pi telo mute.
tenpo ni la sina jo ala jo e tenpo pi pali ala?

[janKipo]

[Mako]

[janMato]

[janKipo]

i'd leave off the ''tenpo'; time of any sort does not become a tokiponist. The 'if'/'when' choice can be left to context. Or put a 'la' after the 'tenpo'.

[janMato]

Well, this is tricky.

Timeline
tenpo pini la -- past. no argument. likewise, tenpo kama la, tenpo ni la.

Characteristic activity or other characteristic quality
tenpo pali la mi ken lape ala. I can't sleep at the office.
tenpo suno la mi ken lape kin. I really can't seep during sunlight.

When the characteristic activity takes a whole sentence to describe, it starts to mess with the "if a then b" logic.

If I become a tokiponist, I make mistakes.

Well, it isn't a question about if he became a tokiponist. It might be logically valid, but I'm no logician. If both are true and the former is just setting up the time, then it seems like it should have tenpo in there somewhere.

If I was born, it was raining. <-- huh? Am I uncertain about this?
mi sin la telo li anpa. <-- I'm not even sure which goes first
telo li anpa la mi sin. <-- Looks worse.

tenpo telo li anpa la mi sin. I was born while it was raining.

? tenpo la telo anpa la mi sin. Sometime, if the rain is falling, I (will be)/was born.