His writing is so confusing that it is difficult to make out ___it is he is trying to express.
问题描述：
His writing is so confusing that it is difficult to make out ___it is he is trying to express.
是不是强调句型运用到宾语从句的情况
这是一个强调句型运用到宾语从句中的省略题型，在it is 后省略了that.
答
这里有三重句式,第一重：so...that...引导的结果状语从句,第二重：It is +形容词+to do sth 句型；第三重：___it is he is trying to express.不是强调句,应该是表语从句,作make out的宾语