英语改错learning Russian is very popular in1950s急
问题描述：
英语改错learning Russian is very popular in1950s
急
答
learning Russian was very popular in the 1950s
in the +整年+s表示 在哪个世纪什么年代
答
少了一个定冠词“the”还有“1950s”应该是“1950's”
Learning Russian is very popular in the 1950's
答
Learning Russian was very popular in1950s.( is -> was)
答
过去式了，时间明显是过去的，is改成was