分析（语法结构、句意等各方面）Which of the two cows ___that___ you keep produces more milk?
问题描述：
分析（语法结构、句意等各方面）Which of the two cows ___that___ you keep produces more milk?
答
你养的两只奶牛，哪只产奶更多？
that you keep是定语从句，修饰cows
答
Which of the two cows that you keep produces more milk?
主语是：Which of the two cows that you keep （其中that you keep 是定语从句，修饰cows ）
谓语是：produces（produce加s是因为which指其中的某一只奶牛，是单数）
宾语是：more milk（加more是因为两只奶牛产奶作比较）
句子意思是：你养的两只奶牛，哪只产奶更多？
答
句意：你养的两只奶牛里面哪只产奶多?
Which of the two cows （that you keep） produces more milk?
that you keep是cows的定于从句,你养的奶牛.去掉以后句子仍然是完整的.
答
which of the two cows that (you keep) produce more milk?是produce,两只牛所以不加s.
你养的哪两只奶牛产更多的牛奶.
that 代指那两只牛,you keep也是修饰那两只牛的
which of the two cows that produce more milk?
这样就清楚了些.