SQL:select * from knowledge_window.favourites where user_id='' and url_id=''
ERROR:Table 'knowledge_window.favourites' doesn't exist
由一个非常的单词,变化出不同意思不同词性的系列。非常好记。
careful= care+ ful( ful是形容词后缀)
careless= care+ less( less是否定后缀)
carefully= care+ ful+ ly(形容词 careful+ ly就变成了副词)
carelessly= care+ less+ ly(形容词 careless+ ly就变成了副词)
carefulness= care+ ful+ ness( ness是名词后缀)
carelessness= care+ less+ ness( ness是名词后缀)
看起来复杂,其实稍微掌握几个前后缀,就会变得非常简单!