When communicating in Chinese you may often make mistakes using Chinese grammar like:

False:

    人民们对这新生事物表现了极大的兴趣和热情。

    Rénmín men duì zhè xīnshēng shìwù biǎoxiàn le jídà de xìngqù hé rè qíng

True:

    人民对这新生事物表现了极大的兴趣和热情。

    Rénmín duì zhè xīnshēng shìwù biǎoxiàn le jídà de xìngqù hé rè qíng.

 

“人民”是泛指性的名词，它不能受数量词或本身含有复数的词语修饰，也不能加“们”。应改“人民们”为“人民”。“人们”是“许多人”的意思。

As a noun of generic reference. 人民 allows no modification of a numeral-measure word or words indicating plural, neither does it allow the addition of 们. The sentence will be correct if 人民们 is replaced with 人们 which means many people.