What is the difference between 必须, 得, 必需, and 需要? The easiest way to distinguish the two is to see whether it is a noun or a verb that comes after it If it is a noun, use 必需， 需要; if it is a verb, use 必須 得 is quite interesting because it can be used to replace both 必須 or 必需 有錯誤就得批評;做得好就得表揚
Difference between 須要 vs 需要 and 嘗試 vs 試試看? @Crashalot 需要(v) applies to noun ; 須要(v) applies to verb; you can say 需要錢, but not 須要錢; you can say 須要付錢, but not 需要付錢; 需要 can be a noun for 'need' For example in "有去中國的需要" - '有' is the verb, '去中國的' is the adjective phrase and '需要' is the noun –