Subject + 需 + Verb
需 (xū) is a literary or abbreviated form of 需要, meaning "to need" or "to require." It is more commonly found in written Chinese, formal documents, and fixed expressions. It functions the same way as 需要 but gives a more concise, formal tone.
此项工作需经理批准。
cǐ xiàng gōngzuò xū jīnglǐ pīzhǔn.
This work requires the manager's approval.
如需帮助,请拨打客服电话。
rú xū bāngzhù, qǐng bōdǎ kèfú diànhuà.
If you need help, please call customer service.
所需材料已列在表格中。
suǒ xū cáiliào yǐ liè zài biǎogé zhōng.
The required materials are listed in the form.