how 和 to 不是在一起的,to 是和 speak 组成不定式 “to speak”,how 作为副词去修饰“to speak” ,English 是 to speal 的宾语. 看下面三个句子: She taught him English.她教他英语 She taught him to speak English.她教他说英语 She taught him how to speak English.她教他如何说英语 主语—— she 谓语—— taught 宾语—— him 宾补——how to speak English (不定式短语) 其中: to speak——不定式,English——宾语,how ——状语 ,