in advance是个介词短语，意思是"提前"，同义词是ahead of time.语法规则：介词+名词=形容词/副词,修饰名词作定语,修饰动词作状语.
例如：你最好提前把家庭作业完成.You had better finish your homework in advance.
in advance是个介词短语，意思是"提前"，同义词是ahead of time.语法规则：介词+名词=形容词/副词,修饰名词作定语,修饰动词作状语.
例如：你最好提前把家庭作业完成.You had better finish your homework in advance.
