主语+动词+（that）从句,从句就是一个句子
如：I think (that) English is difficult to learn.其中I是主语,think是动词,后面(that) English is difficult to learn是个完整的句子,that可以省略
宾语从句的语法,详解,
主语+动词+（that）从句,从句就是一个句子
如：I think (that) English is difficult to learn.其中I是主语,think是动词,后面(that) English is difficult to learn是个完整的句子,that可以省略