这句话的语法有无错?He was not only very inquisitive,but he frequently

He was not only very inquisitive,but also frequently offered intelligent opinions .
说明：
not only 和but also 连用 是“不仅.而且.”的意思；
主语在这个短语之前时（如该句）,只用一个主语就行,本句中第二个he 可以省去.