副词有三个作用
1.修饰一般动词
例如He drives his car carefully.这里的副词carefully修饰一般动词drive
2.修饰形容词
例如He is a very careful driver.副词very修饰形容词careful
3.修饰另一个副词
例如He drives his car very carefully.副词very修饰副词carefully