积累词汇和语法的英语可以用 "acquiring vocabulary and grammar in Engpsh" 表示。
"Acquire" 意为 "to gain or obtain something through effort or action"。"Vocabulary" 指 "the set of words used by or known to a particular person or group"，"grammar" 指 "the set of rules for making sentences in a language"。
举例来说：
"She is acquiring new vocabulary by reading extensively in Engpsh." (她通过广泛阅读来积累新的词汇)
"He is working on acquiring better grammar in Engpsh." (他正在努力提高英语语法)