After checking his dictionary, for example, he wrote down not only the word, but also a complete sentence in order to remember the word and how to use it.
就拿查生字來說，他不是只單純地抄下生字；他先抄下整段的例句，從句子來背生字，這還不夠，他還把周邊相關的字，也就是「延伸字」，一字不漏的全部抄錄下來。