英文挑错

(the)first (national)known male singers (of)popular music(appeared) during the 1920s.
1.first是序数词,前面需加定冠词the.
2.national与known之间应该可以加上一个连词符号, national-known 国家级闻名的
3.以...著名 be known for 将of改成for
4.appeared应该没什么问题

during 适用于一段时间 时间点用in

"of"用的不对，改为"for"

singers应该把s去掉.别的没错.

during没错啊!

是不是 KNOWN 应该在后面加S？？？