您好，很乐意为您解答，
两个词其实都是时间副词.基本上可以通用.但是CURRENTLY强调的是到目前为止的为止,而NOW强调的现在的一段时间,跨度比CURRENTLY长。
current 是形容词或名词, 放在这句里当然不可, 必需用副词 Adverb , 只+ ly.
例如 :I am currently in my high school year . or
She is currently in her high school year. or
Currently she is in her ..... or
She is in her high school year currently.
