maybe是副词,但为什么可以在is或are的后面?

maybe是副词,但为什么可以在is或are的后面? 英语高手进.我知道副词是放在be动词或情态动词后,实意动词前的 probably perhaps maybe 它们都是副词,1.那它们在句子的位置 为什么不是这样的呢?2.maybe不能放在句中么?那么它的句子结构是什么? maybe是副词还是形容词? maybe的位置放哪?我们老师说可以放在句首和助主语后（如：He maybe is a teacher）但我学习机上的老师说应放在be动词之后. Modest and soft-spoken,Agatha Muthoni Mbogo,24,is hardly the image of a revolutionaryhardly是副词 为什么可以在这里使用?是什么成分? 为什么在句子Look,the light is on；she maybe in the room中,maybe是连接的 关于副词的几个问题,不是说副词修饰形容词和动词么,可以下面几个例子怎么不是It is an important underwater device underwater 是形容词,但为什么important 而不是importantly还有It is primarily in the ocean 为 britain is fast becoming a country of fatties这句话中fast是副词吗?fast作为副词时可以用在动词前面吗? 请问,He is probably a teacher 的probably 修饰什么?这是个主系表结构,那么副词probably在这里是修饰系动词is的?还是做什么补语什么的?还是修饰全句的?另外,系动词可以被修饰么?可以被动词或副词修 英语副词加名词 maybe 15 to 20years maybe是副词后边加名词he will get less than 20 years,maybe 15 to 20yearsmaybe是副词后边加名词 可以吗 副词可以修饰名词或名词短语吗?He is really a good teacher.really是修饰名词a good teacher 的还是修饰be 的呢? away是副词,但It is 15 kilometers away from here.中为什么没有动词? 副词可以修饰名词吗?Cytoplasm is mostly water.中的mostly是副词,为什么后面跟的是名词water? 英语“She is probably a teacher”中probably是副词,为什么要放在笔动词之后?一般的副词应在动词之前啊!还有所有副词与笔动词连用时都是笔动词在前么? home是可数名词为什么不加A或THE 是地点副词为什么前有可加AT? maybe是副词“也许,可能”,常用于句首,比如Maybe he loves me.那能用于句中吗?He maybe loves me.放在句中算错吗? 既然副词可以做表语,但为什么每次在系动词后一般都用的形容词作表语 比如：she is lucky为什么不能用she is luckily~ 填不定代词或这副词 Maybe ______ is in the room because the light is on填不定代词或这副词There's isn't ______ watching TV at the moment .Please turn it off.Is____ here? NO,John has asked for a leave Do you believe _____ in ads?