is the boy your brother做否定回答：No,he isn't.
不明白的再問喲,請及時采納,多謝!怎么變一般疑問句，做肯定回答和否定回答的方法是什么如果句中有be 動詞，一般將be 動詞提前到句首如： He is fifteen. - Is he fifteen ? 如果是行為動詞就需要助動詞 do, does, did 等如： He goes to school by bus. - Does he go to school by bus ? 很多規(guī)律喲，三言兩語是說不清的喲。youreraser ishers同義句Your eraser is hers. 你的橡皮是她的。 （ 什么意思？）就是這樣的Her eraser is yours.