英語長難句分析
請幫忙分析這句長句.If its message were confined merely to information and that in itself would be difficult if not impossible to achieve,for even a detail such as the choice of the color of a shirt is subtly persuasive-advertising would be so boring that no one wound pay any attention.
中文意思我知道,就想知道這句話的結(jié)構(gòu)怎么分析,誰是誰的從句,修飾的又是誰?
還有.為什么 and that in itself would be difficult 后面又有一個if not impossible to achieve?
if后面不是加句子的嗎?這個if和句子開頭的if什么關系,如果有兩個從句不是應該也有兩個主句即兩個謂語的嗎?
后半句（從for even開始）,哪里是主語?謂語?
問題有些多,謝謝回答的朋友(⊙o⊙)哦!