否定句 I don't want to give the book to (her).
一般疑问句 Do you want to give the book to (her)?Yes ,I do.No,I don't
who (Whom) do you want to give the book?为什么要加do?不加其他的？这是个动词一般现在时的句子，变成否定句，一般疑问句，特殊疑问句时，要加助动词“do", 不能用 is，are 等等。以后还要学习动词的其它形式，句子变形都要加助动词，如：动词第三人称单数要加 does, 过去时要用 did 等等。