你要...它就...
Reach for 你要...它就... when you want to advertise total flexibility — 'whatever you need, it can do.' It's the salesperson / engineer / parent's favorite construction: you specify a demand, the subject promises to match. Common in product pitches (you want it fast, it makes it fast), service descriptions (you want it custom, they make it custom), and praise (whatever the kid asks for, the parent provides). The 要 here means 'want / need,' not 'will.'
Structure
你要 [DEMAND]，[SUBJECT] 就 [MATCHING ACTION]
nǐ yào... [SUBJECT] jiù...
How to Think About It
Think of this as a contract template — 你要 fills in the customer's blank, 就 fills in the system's automatic response. The 就 is what makes the response feel instantaneous: as soon as the demand exists, the action follows, no friction. Drop 就 and the sentence reads like two separate facts; keep 就 and it reads as 'demand triggers supply.' That's why this pattern dominates marketing copy.
Examples
你要什么颜色，它就能做什么颜色。
Nǐ yào shénme yánsè, tā jiù néng zuò shénme yánsè.
Whatever color you want, it can make that color.
你要快，它就快；你要慢，它就慢。
Nǐ yào kuài, tā jiù kuài; nǐ yào màn, tā jiù màn.
You want it fast, it's fast; you want it slow, it's slow.
你要多少，它就能给你多少。
Nǐ yào duōshao, tā jiù néng gěi nǐ duōshao.
Whatever amount you want, it can give you that amount.
Common Mistake
Learners put 就 in the first clause next to 要 by mistake. 就 belongs in the response clause, in front of the verb that fulfills the demand.
你就要快，它做得快。
你要快，它就做得快。
Don't Confuse With
不管...都...
不管...都... means 'no matter what... still...' It emphasizes constancy across cases. 你要...它就... pairs a specific demand with a specific response.
只要...就...
只要...就... means 'as long as.' Very close in feel, but 只要 is purely conditional; 你要...它就... is specifically demand-and-supply with a customer / system framing.
想 [VERB] 就 [VERB]
想...就... means 'whenever you want to X, just X' — about the speaker's freedom. 你要...它就... is about the system / product responding to demand.
Practice
Fill in the blank: 你 ___ 什么颜色，它就能做什么颜色。
Show answer
要
Fill in the blank: 你要快，它 ___ 快。
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就
Arrange: 它 / 你要 / 快 / 就 / 快，/ 。
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你要快，它就快。
Translate to Chinese: Whatever color you want, it can make that color.
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你要什么颜色，它就能做什么颜色。
Write a sentence using 你要...它就... to advertise a flexible product or service.
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你要大份，它就给你大份。
Hear It in Real Episodes
This pattern appears in 1 Fluentide episode: