答案：loud aloud
loud是既是形容詞又是副詞,loudly和aloud都是副詞.
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.
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.
loud當(dāng)副詞用時,與loudly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.