〜とき toki
〜とき（toki）means “when ~; at the time of ~”. とき (時, 'time') turns the preceding clause into 'when/at the time that'. Formation: V(普通形)/Aい + とき；Aな + な + とき；N + の + とき
when ~; at the time of ~
N5Formation
V(普通形)/Aい + とき；Aな + な + とき；N + の + とき
Explanation
とき (時, 'time') turns the preceding clause into 'when/at the time that'. It connects to plain-form verbs and い-adjectives directly; な-adjectives and nouns take な and の respectively. The tense of the verb before とき matters: る-form means 'before/while the action', た-form means 'after/once the action is done'.
Examples
Note
Watch the tense before とき: 〜るとき = before/during the action, 〜たとき = after it is completed.
FAQ
〜とき — what does it mean and how is it used?
when ~; at the time of ~. とき (時, 'time') turns the preceding clause into 'when/at the time that'. It connects to plain-form verbs and い-adjectives directly; な-adjectives and nouns take な and の respectively. The tense of the verb before とき matters: る-form means 'before/while the action', た-form means 'after/once the action is done'.
〜とき — how do you form it?
V(普通形)/Aい + とき；Aな + な + とき；N + の + とき
〜とき — any usage notes?
Watch the tense before とき: 〜るとき = before/during the action, 〜たとき = after it is completed.