先说断句，断句之前老师给大家说过其中一个标志：标点符号。除此之外，还有一个能够代表新意群的标志：从属连词。因为从属连词是引导从句的，比如一个名词+that+句子(She is a girl who is beautiful),这里从从属连词开始who就是一个新的从句了，所以我们就可以从who前面断开。就刚才的例子， He believes that this very difficulty may have had the compensating advantage of forcing him to think long and intently about every sentence, //and thus enabling him to detect errors in reasoning and in his own observations.一个逗号可以进行断句，但是前面还很长，这里还有一个从属连词that，但是前面只有2个单词，老师之前给大家说过断句是需要遵循两个前提的：1，长度适中;2，语法结构相对完整。这里很明显长度不适中，所以不能断，怎么办呢?这里给大家补充一个除了标点和从属连词之外的符号，短语。短语也是一个相对完整的结构，所以也可以断开。很明显大家会发现He believes that this very difficulty may have had the compensating advantage //of forcing him to think long and intently about every sentence这里有一个of短语，所以可以断开。这样的话句子断为了3个意群
① He believes that this very difficulty may have had the compensating advantage
② of forcing him to think long and intently about every sentence,
③ and thus enabling him to detect errors in reasoning and in his own observations.这样看起来就没那么难了。
