没错
Most of us =The majority of us
时态和数没问题
in the 1980s
指20世纪80年代.复数,加冠词都对
请及时采纳,不懂继续问( 天天在线 ）对不起！我在“1980“后多打了个s .重新回答Most of us were born in the 1980（改错）1980后加s如果加冠词呢？如何加？加在数词前呀the 1980s