aloud , loud 和 loudly 都可以表示“大聲地”,但在用法上有區(qū)別.
　　aloud , loud二者作為副詞,都有“大聲地”、“響亮”的意思,有時可以通用.但aloud與read,think連用時,表示“出聲”,而loud用于talk,speak,shout,laugh等動詞之后,在口語中代替loudly

　?、?aloud 強調(diào)發(fā)出的聲音能被聽見,意思為“出聲地”或“大聲地”,常用 read , call 等動詞連用.例如：

　　Please read the text aloud.

　　請朗讀一下課文.

　?、?loud 意為“響亮地”、“大聲”或“高聲地”,側(cè)重發(fā)出的音量大,傳得遠,一般多用來修飾 speak , talk , laugh 等動詞. loud 還可用作形容詞.例如：

　　Speak louder, please, or no one will hear you.

　　請大聲些,否則沒人能聽見.

　?、?loudly 意為“響亮地”,其基本意義與 loud 相同,還常與 ring , knock 等動詞連用. loudly 放在動詞前后均可,含有“喧鬧”或“嘈雜”的意味.例如：

　　Suddenly the bell on the wall rang loudly.

　　突然,墻上的鈴大聲地響起來.

　　aloud, loudly只能用作副詞；loud既可作副詞,也可用作形容詞.當副詞用時,loudly與loud一樣用來說明聲音的強度,意思是"高聲地,喧噪地",只是在動詞后面loud比loudly更常用些.他們的反義是：quietly.例如：
　　Don't talk so loud (loudly)----you'll wake the whole street. 別那么大聲說話,你快把左鄰右舍都吵醒了.
　　Someone knocked loudly (loud) at the door. 有人在大聲敲門.
　　注：而aloud往往與動詞read和think連用,表示真的把話說出,而不是在腦子里默默地"說".
　　She has a very good pronunciation when she reads aloud.她朗讀時,發(fā)音很好.When we were children, our mother read aloud to us.當我們是孩子時，我們的母親大聲地朗讀給我們聽。

The teacher read this story aloud to his students.教師向?qū)W生大聲朗讀這個故事。
Suddenly there was a loud bang.突然砰地一響。
His vioce is harsh and loud.他的聲音又尖又響。
The students all laughed loudly.學生們都大聲笑了。
Please don't speak loudly in the library,will you?請不要再圖書館大聲說話，好嗎？