grammar 语法
eg:To learn grammar well is very important.
把语法学好是很重要的.
meaning 意思
eg:The meaning of the setence is very easy to understand.
这句话的意思很好理解.
punctuation 标点
eg:His letter was completely without punctuation.
他的信中一个标点也没有.
spelling 拼写
eg:Your spelling mistakes are really very serious.
你的拼写错误真的很严重.
translation 翻译
eg:The children do one French translation a week.
孩子们一星期做一次法语翻译.