Yet a considerable number of the most significant collections of criticism published in the 20th century consisted in large part of newspaper reviews. To read such books today is to marvel at the fact that their learned contents were once deemed suitable for publication in general-circulation dailies.

【参考译文】

然而，在20世纪出版的大量最有重要意义的评论文集中，报刊评论占了很大部分。 如今阅读这些书，人们不禁感到惊叹：文集中博大精深的内容，曾被认为适合在大众阅读的报刊上刊登。

【句子分析】

第一句：

1. collections of criticism （评论文集）：主语

2. a considerable number of the most significant 作定语，修饰collections of criticism

3. published in the 20th century  过去分词短语作定语，修饰collections of criticism

4. consisted in（存在于…中，以…为主要部分）：谓语

5. large part of newspaper reviews：介词宾语

第二句：

1. To read such books today：主语

2. to marvel at the fact that their learned contents were once deemed suitable for publication in general-circulation dailies：表语

3. marvel at the fact：对这个事实感到惊讶不已

4. that their learned contents were once deemed suitable for publication in general-circulation dailies 为the fact的同位语。

在同位语从句中：

5. heir learned contents：主语

6. were once deemed ：谓语，deem（认为）相当于consider

7. suitable for publication in general-circulation dailies ：主语补足语

【特别说明】

一旦宾语变成了被动语态的主语，那么，“宾语补足语”就变成了“主语补足语”。例如：

The evening was deemed a great success.  大家认为这次晚会非常成功。

He was deemed guilty by the foreman.  陪审长认为他有罪。

He was made monitor of our class.他被选为我们班的班长。

His death was kept a secret for a long time. 他的去世被长期保密。

The door was pushed open.门被推开了。

He was caught cheating in the exam.他被当场抓住考试作弊。

The house was found broken in. 有人发现这所房子被人破门而入。

He was considered to have stolen the money.有人认为他偷了那笔钱。