と

「と」connects two clauses in a sentence, where the clause after it is the inevitable result of the clause before it, or a discovery after performing the action in the previous clause.
「と」is often used to explain the operation of machinery or in instructions.
Notes:
- The clause after it should not be used to express the wishes, desires, invitations, or requests of the speaker. For example:
- 時間があると、宿題をします。✖ (When I have time, I will do my homework.) ✖
- 時間があると、ちょっと手伝ってください。✖ (When I have time, please help me a little.) ✖
- It can be used to talk about a behavior as a habit of the speaker, because in this case, the level of will in the action is low. For example:
- お腹がすくと、私はいつもコンビニへ行きます。 (When I get hungry, I always go to the convenience store.)
- When the subject is not the speaker, the clause after it can be followed by a verb indicating will. For example:
- 彼は時間があると、宿題をします。 (When he has time, he does his homework.)