aloud :ad.出声地.大声地
loud :adv.＆adj.大声地(的).响亮地(的).吵闹地(的)
loudly :ad.大声地.高声地
The teacher＇s voice is very (loud ).We all can hear it.
该用形容词.所以只有loud合适.
He read the poem (aloud).出声地
ex:Please read the story aloud.
They are arguing so (loudly)that I can＇t focus my mind on study.
带有吵闹的意思.所以用loudly
ex:The children were shouting loudly.