不好!not only.but also...使用时,要求后面所接对等成分,既然not only后面加句子,那么but also后面也要加句子.但后面句子无需倒装.
Not only is he good at English,but also he is good at Chinese.
当然可改成：
He is not only good at English,but also good at Chinese.
He is good at not only English,but also Chinese.