people 's lives 为什么用复数,而our life 用单数

the doctor saved a lot of people's lives为什么用lives?、 people 's lives 为什么用复数,而our life 用单数 in people's daily life,为什么不是lives pets are of people's lives. affect people's lives为什么是复数 英语翻译How technology affect people’s lives 【英语】是people's life还是people's lives? he saved many people's lives 为什么是用people's 而不是写peoples'来表示复数 It's reported that colors can affect our moods and lives.这是一句中译英.为什么要用lives? technology makes people's lives simpler rather than makes perople's lives more complicated什么意思 请问：life是可数还是不可数名词,People loved life in the open air.life在这里是不可数Tourism causes many changes in Chinese people's lives.为什么这里又用复数？ Who lives farthest from school?lives 为什么加了s? Make people's lives dangerous怎么翻译啊? Friends are very important in people’s lives How does Art affect people's daily lives?英语作文 li ming's mother is a doctor .she has ______ many people's _____.A.lost; lives B.had ; lives C.saved ; lives D.wasted; lives there are over 5 hundred million people lives in city这句话对吗? 1.哪个live要加s吗?为什么? 2.in city后要加s吗?或者. what effects may the use of mobile phones have on people's lives?用英文怎么样回答比较好呢？