句型：sth.is so + adj.+ that.后接结果状语从句.
The acting is so convincing 主句,意思是表演如此让人信服
that it makes you believe that it is one of the best meals he has ever tasted!结果状语从句,意思是：它让你相信这是他所吃到的最好饭菜.
这个从句又分三层.第一层 it makes you believe 是主句,that后面是宾语从句
第二层：it is one of the best meals 是宾语从句,由that连接.
第三层：he has ever tasted 定语从句,修饰meals