看一道高中英语选择题----I'm afraid I have to give it up.----Don't be d

答案：B.
1）答语中后句为祈使句,remember后面的确是一个宾语从句.
2）该宾语从句的主语也是一个从句,即主语从句.
whoever sticks to his work为一个指人的主语从句,即“任何一个对其工作坚持不懈的人”.
不过,楼主可以记住这样的变化规则：如果whoever/whomever/whatever引导名词性从句（含主语从句/宾语从句/表语从句/同位语从句）时,whoever = anybody who,whomever = anybody whom,而whatever = anything that.
这样的话,宾语从句的主语whoever sticks to his work则理解为：anybody (who sticks to his work).
此时就非常容易理解了,who sticks to his work为定语从句,修饰先行词anybody,即anybody who sticks to his work翻译为“任何一个对其工作坚持不懈的人”.
3）如果单独使用anybody的话,则有两种理解方式：
如果用anybody做宾语从句的主语,宾语从句主干为anybody will succeed one day的话,则sticks to his work就无法与该句主干连接,因为做定语从句主语的关系词who（who sticks to his work修饰anybody）是不能省略的.
如果直接把anybody sticks to his work视为宾语从句的主语（从句）,则此主语从句不缺少任何成分,必须用that放在该主语从句句首,且that不可以省略.而且就算that可以省略,则anybody sticks to his work这样的主语从句指的是一件事情,而不是指人,总不能说“某事总有一天会成功的”吧?