Everything / anyone that… (凡是…都…)

Structure 凡是 + the whole group，都 + the same for all

凡是…都… (fánshì… dōu…) covers a whole group with NO exception: "everything that… / everyone who…". 凡是他说的，我都相信 = "everything he says, I believe". 凡是 opens the full group and 都 confirms the rule holds for each one. It’s somewhat formal; in speech 都 alone often suffices.

Examples

凡fán是shì他tā说shuō的de，我wǒ都dōu相xiāng信xìn。
Everything he says, I believe.
凡fán是shì来lái过guò的de人rén，都dōu说shuō好hǎo。
Everyone who has been here says it’s good.
凡fán是shì重zhòng要yào的de事shì，都dōu要yào写xiě下xià来lái。
Anything important should be written down.

Levels are indicative: they follow the standard Chinese Grammar Wiki (AllSet Learning) progression, not an official HSK 3.0 mapping. We never assign levels by eye.

This point and the other 370, with audio on every example, inside Wanyu.