get a letter from sb.为什么letter不是复数形势,mail letters却是复数?
get a letter from sb.为什么letter不是复数形势,mail letters却是复数?
hear from sb receive(此单词可能有误) a letter from sb get a letter
letter复数?
letter复数是什么?
receive a letter from sb 是什么意思?
this is a letter改为复数句
l get a letter from my penfriend
get a letter from的同义词
receive from=hear from=get a letter from
business letter 怎么变复数
letter的复数形式是什么
get a letter from,received a letter ,heard from his invition