题目内容：

Thank you for the help which\that you have done for me.
为什么 用 which\that 讲明help和从句关系

优质解答

which\that you have done for me.这是一句定语从句来的,修饰先行词help.至引导词的选择是看从句的.you have done for me很明显缺少了宾语,而which\that都可以充当宾语的.你可以查看关于定语从句的语法