if your language learning has been less than successful.翻译,并说明语法,successful做的成分
问题描述：
if your language learning has been less than successful.翻译,并说明语法,successful做的成分
答
less than +adj.= not + adj.没有...； 不足...
successful做表语,因为在be 动词has been 后.
翻译:如果你的语言学习还不成功的话..