what are you saying what did you say 语法有错吗?我听不懂你在说什么,用英语怎么说

问题描述:

what are you saying what did you say 语法有错吗?我听不懂你在说什么,用英语怎么说

what are you saying和what did you say 都没有语法错误.
我听不懂你在说什么:I don't know what you are saying.