Time, Sequence, and Aspect Japanese Grammar Lessons

～一方で presents a second objective side that holds alongside the first: contrastive (“on the other hand”) or parallel (“meanwhile”). Attach it after a plain-form verb, i-adjective, na-adjective + な, or noun + である; その一方で can open a new sentence. Keep it distinct from same-moment と同時に, same-subject ながら, and casual けど / が.

～一方では presents one side as a contrastive topic: は spotlights that side as “on one hand,” ready for a balancing second side. Attach it after a plain-form verb, i-adjective, na-adjective + な, or noun + である; writers also open with 一方では…他方では / paired 一方では. Keep it distinct from connector ～一方で (second concurrent side without topic spotlight), same-moment と同時に, and casual けど / が.

～最中だ states that someone is right in the peak or midst of an activity—immersed now, not merely “somewhere during” it. Attach it after noun + の or verb (ている form); 最中 behaves like a noun, so it also takes です / だった / だから / で / の. Keep it distinct from interruptive ～最中に (mid-activity, then Y happened), midway ～途中で, and neutral stage ～ているところだ.

～ないうちに marks doing Y before X happens—literally while X has not yet happened. Attach it after a verb in the nai form; i-adjective change uses ～くならないうちに when something is about to become that way. Keep it distinct from positive ～うちに (while a favorable state still lasts), neutral sequence ～前に, and hard deadline ～までに.

～たび is a bound noun meaning “occasion / each time,” hosted after a verb in dictionary form or after a noun with の. It often takes the particle に (～たびに), but this page focuses on たび itself as the noun host, not as a ready-made particle chunk. Keep it distinct from interval ～ごとに and from everyday routines that need no special “every time” framing.

～きっかけで marks an initial trigger or catalyst that led to a later change, habit, or outcome. The stable pairing is noun / clause + がきっかけで + result; verb hosts usually take の or こと before が. Keep it distinct from ～をきっかけに, which more often frames the speaker as taking an opportunity on purpose.

～につき attaches to a noun and covers three formal or written uses: unit rates (per), notice-style reasons (due to), and business regarding. Formation is typically noun + につき; keep the three senses separate—do not mash them into one vague gloss. Rate sense appears in fees and schedules; reason and regarding senses belong mainly to formal notices and business writing.

～たての＋A (A = noun / N) puts a freshly finished action in front of a noun: freshly baked bread, newly built house, a just-woke-up look. Form it with the verb's pre-ます form + たて + の + noun — 焼きたてのパン, never 焼いたたてのパン. It highlights the fresh or ideal state of a tangible result, not a general "I just did X" timeline.

やがて marks that something happens after time has passed—“eventually” or “in time”—before event and change predicates (やがて春が来る, やがて雨が止んだ). It packages a longer horizon than imminent まもなく, and a time-elapsing arc rather than a vague “one of these days” promise. Learners meet it in stories, predictions, and natural unfolding; keep やがて as a fixed adverb ahead of the predicate it colors.

ようやく marks that something is achieved at last after effort or waiting—“finally” or “at last”—before event and result predicates (ようやく終わった, ようやく電車が来た). It packages relief after a stretch of struggle or delay, not a plain eventual timeline and not an imminent “shortly.” Learners meet it when a wait ends, a hard task finishes, or understanding finally lands; keep ようやく as a fixed adverb ahead of the predicate it colors.

～際 is a formal way to say when or at the time of an action or situation, common in manuals, notices, and careful workplace Japanese. Attach 際 after noun + の, or after a verb in dictionary or ta-form; the next clause often gives an instruction, requirement, or careful note. Keep everyday when as ～とき, reserve ～に際して for a special milestone, and treat ～際に as the same formal when with an added に.

～際に is a formal way to mark the time when an action or situation happens, common in manuals, notices, and careful workplace Japanese. Attach 際に after noun + の, or after a verb in dictionary or ta-form; the next clause often gives an instruction, requirement, or careful note. Keep everyday when as ～とき, treat bare ～際 as a close twin that often takes は, and reserve ～に際して for a special milestone.

～にあたり marks the formal occasion of beginning a planned event, role, or endeavor—common in speeches, notices, and careful written Japanese. Attach にあたり after a noun or after a verb in dictionary form; the next clause often gives a greeting, preparation, resolve, or careful request. Keep everyday when as ～とき, use broader formal when as ～際に, and treat ～に際して as a close milestone cousin that is more emotionally neutral.

～にあたって marks the formal occasion of beginning a planned event, role, or endeavor—common in speeches, notices, and careful written Japanese. Attach にあたって after a noun or after a verb in dictionary form; the next clause often gives a greeting, preparation, resolve, or careful request. Treat ～にあたり as a near twin with the same kickoff meaning; keep everyday when as ～とき and broader formal when as ～際に.

～に先立ち marks a preparatory step that comes before a formal event, ceremony, or planned process—common in speeches, notices, and careful written Japanese. Attach に先立ち after a noun or after a verb in dictionary form; the next clause usually names a check, briefing, rehearsal, or other setup. Treat ～に先立って as a near twin with the same “prior to” meaning; keep everyday before as ～まえに and kickoff occasions as ～にあたって.

～に先立って marks a preparatory step that comes before a formal event, ceremony, or planned process—common in speeches, notices, and careful written Japanese. Attach に先立って after a noun or after a verb in dictionary form; the next clause usually names a check, briefing, rehearsal, or other setup. Treat ～に先立ち as a near twin with the same “prior to” meaning; keep everyday before as ～まえに and kickoff occasions as ～にあたって.

～を前にして marks facing an upcoming event, person, or turning point—often with nerves, resolve, or reflection rather than a simple clock-time before. Attach を前にして after a noun; the next clause usually shows how someone stands toward that moment. Keep everyday before as ～まえに, preparatory formal steps as ～に先立って, and kickoff occasions as ～にあたって; keep approaching-date ～を控えて for calendar anticipation.

～を控えて marks that an important event or date is approaching on the calendar, and the next clause often shows lead-up preparation, busy atmosphere, or schedule pressure. Attach を控えて after a noun; do not insert の, and keep を (not に). Keep stance-focused facing as ～を前にして, preparatory formal steps as ～に先立って, and kickoff occasions as ～にあたって; keep everyday before as ～まえに.

～た途端 marks that the moment a verb action finishes, the next clause follows at once, usually as a sudden or unexpected result. Attach とたん after the verb ta-form. に may follow とたん, but the verb itself stays in the ta-form. Keep literary immediacy as ～や否や or ～が早いか, near-overlap as ～か～ないかのうちに, impression pivots as ～かと思うと, same-moment coincidence as ～と同時に, and a planned follow-up as the verb pre-ます form plus 次第.

～次第 marks that as soon as a verb condition is met, a planned next step follows. Attach 次第 to the verb pre-ます form, the part before ます. The right clause is often a future plan, report, or contact promise. Keep a sudden observed result as ～た途端, keep noun “depending on” as ～次第だ, and keep literary immediacy as ～や否や. Upcoming ～次第で and ～次第では stay comparison-only for now.

～次第で says that a result, a choice, or a difference depends on the noun before it. Attach 次第で directly to that noun. A clause can join with か or かどうか. Do not insert の before 次第. Keep a closing “it depends on” as ～次第だ, keep a marked possibility as ～次第では, and keep “as soon as” as the part before ます plus 次第.

～次第では says that one possible outcome depends on the noun before it. Attach 次第では directly to that noun. A clause can join with か or かどうか. Do not insert の. Keep a plain change as ～次第で, keep a closing “it is up to” as ～次第だ, and keep “as soon as” as the part before ます plus 次第.

～に伴い says that as one change or event happens, something else comes with it. Put a noun, or a dictionary-form verb, directly before に伴い. Do not insert の. Do not use ます or past た on that verb. に伴い is the part before ます of 伴う. News and notices use it. The right side may be a finished change, a change still going on, or a planned action.

～に伴う names a noun that comes with a change or an event. Put a noun, or a dictionary-form verb, directly before に伴う. The next word is a noun. に伴う modifies that noun. It does not join two clauses. News and reports use it.

～にしたがい says that as one thing changes, another thing changes with it, or that an action follows a rule, an instruction, or a guide. Put a dictionary-form verb, or a noun, directly before にしたがい. Do not insert の. Do not use ます or past た on that verb. にしたがい is the part before ます of したがう. Formal writing uses it. ～にしたがって is the more common て form with the same two uses.

～にしたがう means to follow or obey a rule, an instruction, a person's words, or a flow such as the changing times. The thing you follow takes に, never を. したがう changes like 買う: したがいます, したがった, したがわない, したがって. It can end the sentence or describe a noun, as in 法律にしたがった方法. ～にしたがい and ～にしたがって are the connectors that join two clauses.

～とった is a spoken, often regional past form of the progressive and resulting-state chain built on te-form + いる / おる. It maps most clearly to standard ～ていた and, in some register paths, ～ておった. Learners mainly meet it in casual conversation, dialect media, and character speech. The lesson goal is recognition and accurate mapping to standard meaning, not exam-style production of ～とった as neutral written Japanese. Keep it distinct from present dialectal ～とる and from simple past ～た: ～とった keeps the progressive or resulting-state reading, only shifted into past time.