随着...势必...
Reach for this in analytical writing when you want to link a developing trend to an inevitable consequence — 'as X unfolds, Y is bound to happen.' 随着 opens with the change in motion (technology advancing, costs falling, climate warming), and 势必 in the second clause declares the consequence is unavoidable. Strong, slightly dramatic register; common in opinion pieces, white papers, and forecasts.
Structure
随着 [ONGOING CHANGE]，[SUBJECT] 势必 [INEVITABLE RESULT]。
suízhe... shìbì...
How to Think About It
随着 frames a trend that is already underway and gathering momentum; 势必 then projects a single outcome that the speaker treats as locked in. The combo is more confident than 随着…会…… — it says 'this will happen, full stop.' Both halves are required: 随着 alone reports a trend, 势必 alone makes a prediction; together they pair the cause and the certainty.
Examples
随着人口老龄化，养老问题势必成为社会的焦点。
Suízhe rénkǒu lǎolínghuà, yǎnglǎo wèntí shìbì chéngwéi shèhuì de jiāodiǎn.
As the population ages, eldercare is bound to become a focal social issue.
随着电动车的普及，传统加油站势必减少。
Suízhe diàndòng chē de pǔjí, chuántǒng jiāyóuzhàn shìbì jiǎnshǎo.
As electric vehicles become widespread, traditional gas stations are bound to decrease.
随着AI技术的进步，许多行业势必发生剧烈变化。
Suízhe AI jìshù de jìnbù, xǔduō hángyè shìbì fāshēng jùliè biànhuà.
As AI technology advances, many industries are bound to undergo dramatic changes.
Common Mistake
Learners hedge the conclusion with 可能 or 也许 after 势必, which contradicts the word's meaning. 势必 already means 'inevitably' — adding 'maybe' breaks the tone.
随着技术的发展，价格势必可能下降。
随着技术的发展，价格势必下降。
Don't Confuse With
随着...，...也...
Neutral pairing that just reports a parallel change. 随着…势必… upgrades the second half to 'unavoidable.'
随着...，...将...
Uses 将 ('will') for a future-tense statement. 势必 is stronger — 'cannot fail to.'
一定 + Verb
一定 expresses speaker certainty in any sentence. 势必 specifically lives in the consequence half of a trend-result frame opened by 随着.
Practice
Fill in the blank: ___ 着气候变暖，极端天气势必增加。
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随
Fill in the blank: 随着收入提高，消费 ___ 必发生变化。
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势
Arrange into a sentence: 势必 / 普及 / 5G的 / 随着 / 用户体验 / 改变 / ，
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随着5G的普及，用户体验势必改变。
Translate to Chinese: As remote work becomes the norm, office rents are bound to fall.
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随着远程办公成为常态，写字楼租金势必下降。
Write a sentence linking an ongoing trend to an inevitable consequence using 随着…势必….
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随着新能源汽车销量的增长，传统燃油车的市场份额势必萎缩。
Hear It in Real Episodes
This pattern appears in 1 Fluentide episode:
Related Grammar Patterns
Acquire by listening
Hear 随着...势必... in real Chinese, not in a textbook.
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