What is the difference of 不但， 不仅 and 不只？

不但 (bùdàn):
"不但" is a conjunction that is often used at the beginning of a sentence to introduce additional elements or ideas.

It is commonly followed by "而且" (érqiě) to express further consequences or details.

Example: "不但他聪明，而且他勤奋" (bùdàn tā cōngmíng, érqiě tā qínfèn) means "Not only is he intelligent, but he is also hardworking."



不仅 (bùjǐn):
"不仅" is similar to "不但" and is also used as a conjunction meaning "not only."

It can be followed by "而且" (érqiě) for emphasis.

Example: "不仅他聪明，而且他懂得很多" (bùjǐn tā cōngmíng, érqiě tā dǒngde hěnduō) means "Not only is he intelligent, but he also knows a lot."



不只 (bùzhǐ):
"不只" is used to express "not only" or "more than," but it is more commonly used in the sense of "not only" when referring to a restricted or limited set of options.

It implies that there might be other possibilities, but the mentioned ones are noteworthy.

Example: "不只是这个问题，还有其他的因素" (bùzhǐ shì zhège wèntí, hái yǒu qítā de yīnsù) means "It's not only this issue; there are also other factors."