og11-50，新问题

manasarovar

A的解释的

 A     Inverting the usual order results in an ungrammatical construction in which the main verb is both preceded and followed by a subordinate clause

也就是在谓语前后都用从句（主语从句+表语从句或者宾语从句）是ungrammatical construction 。

我理解是：that引导主语从句结构上没错，或许只是ets不喜欢；但是如A这样的结构就是错误了。