学校を出るとすぐ、彼は実業界へ入った。

school

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to leave; to exit; to go out; to come out; to get out; to leave (on a journey); to depart; to start out; to set out; to move forward; to come to; to get to; to lead to; to reach; to appear; to come out; to emerge; to surface; to come forth; to turn up; to be found; to be detected; to be discovered; to be exposed; to show; to be exhibited; to be on display; to appear (in print); to be published; to be announced; to be issued; to be listed; to come out; to attend; to participate; to take part; to enter (an event); to play in; to perform; to be stated; to be expressed; to come up; to be brought up; to be raised; to sell; to exceed; to go over; to stick out; to protrude; to break out; to occur; to start; to originate; to be produced; to come from; to be derived from; to be given; to get; to receive; to be offered; to be provided; to be presented; to be submitted; to be handed in; to be turned in; to be paid; to answer (phone, door, etc.); to get; to assume (an attitude); to act; to behave; to pick up (speed, etc.); to gain; to flow (e.g. tears); to run; to bleed; to graduate

if; when; and; with; particle used for quoting (with speech, thoughts, etc.); quoting particle; promoted pawn; indicates question (sentence end)

immediately; at once; directly; soon; before long; shortly; easily; without difficulty; right (near); nearby; just (handy)

he; him; his; boyfriend

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

business world; business circles

indicates direction or goal (e.g. "to")

to get in; to go in; to come in; to flow into; to set; to set in