c结尾的形容词加ly

通常，形容词加ly构成副词，但c结尾的形容词加ly，往往需先加al。

常用常考的单词如下：

1. economic-economically
2. specific-specifically
3. historic-historically
4. automatic-automatically
5. energetic-energetically
6. dramatic-dramatically
7. systematic-systematically
8. basic-basically