Edison had a peculiar genius for carrying existing discoveries to the point where they could be converted into practicable devices, and it would be no service to his memory, or to the cause of science which he serves so splendidly, to pretend that he invented by performing solitary miracles.
to pretend that he invented by performing solitary miracles 是做 it would be 的表语吗？
it would be+to pretend that he invented by performing solitary miracles.
to pretend that he invented by performing solitary miracles 这个不定式，不是“表语”，而是句子“真的的主语”。剖析如下：
it （形式主语）would be no service （系表结构）to his memory, or to the cause of science which he serves so splendidly,（两个to 介词短语,意思是：对...而言没任何帮助） to pretend that he invented by performing solitary miracles.（真的的主语）
