〜にわたって
Over/spanning
Use 〜にわたって to describe something that covers a large scale or long duration, like 'over three days' or 'across the whole country.'
How It Works
Originating from the verb 渡る（わたる） or 亘る（わたる） (to cross over/span), 〜にわたって is a formal pattern typically found in news, reports, and academic writing. Although derived from kanji, it is generally written in hiragana (にわたって) when used as a grammar pattern. It highlights that a situation is not just happening at a point, but is stretching across a whole span.
Connection: [Noun] + にわたって
Key Usage Rules:
- Preceding Noun: The noun preceding 〜にわたって is typically a word expressing quantity, duration, or physical extent (e.g., 3 days, 10 years, a wide area). It also frequently attaches to vocabulary explicitly meaning 'whole' or 'entire' (e.g., 全国（ぜんこく）, 全域（ぜんいき）, 全体（ぜんたい）, 一生（いっしょう）) to help learners grasp the nuance of spanning an entire scale.
- AからBにわたって: While 〜にわたって usually takes a total amount or span, the AからBにわたって pattern is used for wide physical spaces (e.g., 東京から大阪にわたって) as well as large spans of time, such as eras or generations (e.g., 江戸時代から明治時代にわたって). For specific, everyday start and end points in time, から and まで are used, while vague or unclear boundaries use 〜から〜にかけて.
- Time: Used for durations, implying the duration is substantial.
- Space: Used for physical areas (e.g., the whole region, the entire route).
- Scope: Used for abstract ranges. A highly common set phrase is 多岐にわたる（たきにわたる - spanning many fields/topics）.
- Frequency: Used for a number of times (e.g., several sessions, multiple rounds), emphasizing the repetition over a period.
Grammatical Forms:
1. 〜にわたって: The standard adverbial form used to modify the following verb.
2. 〜にわたり: A more formal, literary version often used in written reports.
3. 〜にわたる + [Noun]: The standard attributive form used to modify a noun directly (e.g., 10年にわたる計画).
4. 〜にわたった: The predicative form used at the end of a sentence for past events (e.g., 交渉は3時間にわたった). While 〜にわたる can modify nouns for past events, 〜にわたった is perfectly grammatical and frequently used to conclude sentences.
Nuance and Comparisons:
Unlike the neutral 間（あいだ）, 〜にわたって carries a nuance of 'large scale' or 'wide breadth.' It is rarely used for trivial or very short spans unless the speaker wants to emphasize that the short time felt unexpectedly long. Furthermore, while similar to 〜にかけて, which focuses on the transition between two points (often with vague boundaries), 〜にわたって emphasizes the sheer scale, volume, or entirety of the span.
Examples (5)
- 広い地域にわたって大雪が降った。
Heavy snow fell over a wide area.
Word by Word: Wide area spanning heavy-snow fell.
Here, the pattern emphasizes the geographical breadth of the snowfall.
- 会議は５日間にわたって行われました。
The conference was held over a period of five days.
Word by Word: Conference as-for 5-days spanning was-held.
This highlights the duration of the event as a single, continuous block of time.
- 彼は多方面にわたる知識を持っている。
He possesses knowledge spanning many different fields.
Word by Word: He as-for many-directions spanning knowledge (object) has.
Using the attributive form 〜にわたる to modify the noun 'knowledge' (知識).
- 東京から大阪にわたって、新しい通信網が整備された。
A new communication network was established spanning from Tokyo to Osaka.
Word by Word: Tokyo from Osaka spanning, new communication-network (subject) was-established.
This demonstrates the 'AからBにわたって' pattern, which is an exception used specifically for wide physical spaces to define a continuous span.
- 両国の激しい交渉は、実に３時間にもわたった。
The intense negotiations between the two countries spanned a full three hours.
Word by Word: Both-countries' intense negotiations as-for, truly 3-hours even spanned.
This shows the predicative form '〜にわたった' used at the end of a sentence to describe a completed past event.
Common Mistakes
Using it for trivial or very short durations without reason.
× ５分間にわたって歯を磨きました。○ ５分間、歯を磨きました。〜にわたって implies a significant scale. Brushing teeth for 5 minutes is a normal activity, so using this formal pattern sounds unnaturally dramatic.
Attaching it to a specific point in time instead of a duration.
× ３時にわたって会議があります。○ ３時間にわたって会議があります。The pattern must attach to a noun representing a span or quantity (3 hours), not a specific point on the clock (3 o'clock).
How It Connects
Learn This First
The pattern '〜にわたって' is used to describe a range or span, typically in terms of time, space, or frequency. To understand it, learners need to be familiar with the particle 'に' for marking targets, the 'te-form' for connecting verbs, and basic counters for time and distance which form the basis of the 'span' being described.
- にTarget/location Marker
The pattern is built upon the particle 'に' to mark the scope or target of the span.
Level 1 - て形Te-form
The pattern uses the 'te-form' of the verb 'wataru' (to cross/span), which is essential for its grammatical structure.
Level 2 - 日/週/月/年Date/period Counters
Understanding time and period counters is necessary because this pattern frequently describes spans of time.
Level 1
Related Patterns
- を通じて/を通してThrough
Both describe spans, but 〜を通じて/〜を通して often implies a continuous state throughout a cycle or a medium, whereas 〜にわたって emphasizes the length, size, or frequency of a specific event.
Level 3 - までUntil/to
まで marks the endpoint or deadline, while 〜にわたって describes the entire duration or extent itself.
Level 1 - 間During/while
間（あいだ） is the neutral, everyday way to say 'during' or 'for a period,' whereas 〜にわたって is formal and emphasizes scale.
Level 2 - からFrom/because
Learners often compare 〜にわたって with the pattern 〜から〜にかけて (using から). 〜にわたって emphasizes continuous coverage over the entire span with clear boundaries, while 〜から〜にかけて is used for vague boundaries or intermittent actions.
Level 1
Words in This Pattern
Practice 〜にわたって in Bubblegum
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