英语从句中如何判断句子的各个成分

你按照简单句来看就行了,如主谓宾的简单句：I love you.你知道哪个是主语,那个是谓语和宾语吧?那么再看一下从句,I have found out that all the tickets for the concert have been sold out.这里I是主语,found out...