为某人打广告用英语怎么说,可以直接说advertise somebody吗

有这个说法,但一般是用在 “为自己打广告”的句子比如He is advertising himself。Advertising someone 这种说法则比较罕见。为某人打广告的一个常见俚语是tooting someone's horn例句：All the words of praise we hear is just John tooting his friend's horn。