让 / 叫你X你就X: just do what you're told
【四75】口语格式 / fixed patterns
Tone colorsā tone 1á tone 2ǎ tone 3à tone 4a neutral
让 / 叫你X你就X repeats the verb to say “when you're told to do X, simply do X, no arguing”. The first X is what is asked, the second what is expected: plain obedience. 让你做你就做，别多问了: “do what you're told, stop asking questions”.
The formula cuts a discussion short and often ends with a command (别多问了, 别管那么多). 就 is indispensable: it links the instruction to the response. The person can change: 让他去他就去, 老师叫我等我就等. 叫 is a little more casual and more direct than 让.
It is the causative 让 / 叫 you know (妈妈让我回家) reused in a two-part sentence. Spoken register, between people who are close (parents and children, friends, siblings): kindly when you reassure, curt when you lose patience. Avoid it with a superior.
Examples
让你做你就做，别多问了。
Ràng nǐ zuò nǐ jiù zuò, bié duō wèn le.Do what you're told, stop asking so many questions.
叫你吃你就吃，其他的你别管。
Jiào nǐ chī nǐ jiù chī, qítā de nǐ bié guǎn.When you're told to eat, you eat: stay out of everything else.
他让我等我就等，反正也没别的事。
Tā ràng wǒ děng wǒ jiù děng, fǎnzhèng yě méi bié de shì.He told me to wait, so I wait; I've nothing else on anyway.
医生让你休息你就休息，别想着上班。
Yīshēng ràng nǐ xiūxi nǐ jiù xiūxi, bié xiǎng zhe shàngbān.When the doctor tells you to rest, you rest: don't think about work.
老师让他坐下他就坐下，一句话也不说。
Lǎoshī ràng tā zuòxià tā jiù zuòxià, yí jù huà yě bù shuō.The teacher told him to sit down, and he sat down without a word.
Common mistakes
✗ 让你做你做。 → ✓ 让你做你就做。 (就 is required between the two verbs).
✗ 让你吃就吃你。 → ✓ 让你吃你就吃。 (the subject 你 goes before 就, not at the end).