これまで旅行会社に勤めてきたが、アフリカには行ったことがない。

this (indicating an item near the speaker, the action of the speaker, or the current topic); this person (usu. indicating someone in one's in-group); now; here; I (me); certainly

until (a time); till; to; up to; to (a place); as far as; to (an extent); up to; so far as; even; only; merely

travel; trip

company; corporation; workplace

at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although

to work (for); to be employed (at); to serve (in); to serve (as); to act (as); to fill (the position of); to play the role (of); to conduct a religious service

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

Africa

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

to perform; to do; to conduct oneself; to carry out

thing; matter; incident; occurrence; event; something serious; trouble; crisis; circumstances; situation; state of affairs; work; business; affair; after an inflectable word, creates a noun phrase indicating something the speaker does not feel close to; nominalizing suffix; pretending to ...; playing make-believe ...; alias; aka; nickname; alternative name; also known as

nonexistent; not being (there); unpossessed; unowned; not had; unique; indicates negation, inexperience, unnecessariness or impossibility; not ...; to not be...; to have not ...