Question

请教：托福TPO12中一个句子的结构分析。

请高手帮忙分析一下这个句子的结构：Thoug it may be difficult to imagine from a later perspective, a strain of critical opinion in the 1920's predicted that sound film would be a technical novelty that would soon fade from sight, just as had many previous attempts, dating well back before the First World War, to link images with recorded sound.

Answer 1

Thoug it may be difficult to imagine from a later perspective,是让步状语从句，尽管从后来人的观念来理解以下这一点比较困难。a strain of critical opinion in the 1920's这是主语，predicted是谓语，宾语是that引导的句子。句子的主干是opinion观点预测了什么什么。
尽管从后来人的观念来理解以下这一点比较困难。句子的主干是opinion观点预测了什么什么。就像之前，（一战之前）的很多想把图像和音频联系起来的尝试一样。

这一句just as had many previous attempts, dating well back before the First World War, to link images with recorded sound.是as引导的定语从句。dating well back before the First World War是插入语。just as had many previous attempts to link images with recorded sound.就像之前，（一战之前）的很多想把图像和音频联系起来的很多尝试一样。