你把这句话变成陈述句,就会看出,这句话缺的不是关系代词或副词,而是先行词.
This university is （the one）your elder brother will choose this year
如果这句话是 Is this【the】university()your elder brother will choose this year?, 那括号里就填which/that了. 变成陈述句 This is the university(that/which) your elder brother will choose this year?This university is （the one）your elder brother will choose this year为啥用the one其实就是 This university is （the university）your elder brother will choose this year 这所大学就是你哥哥今年要选的那个（大学），但是还用the university会重复，为了避免重复，用the one 代替。那是不是这样：若This university that ......is.....和This university is the one .....主要是不是看is在何处? 如果是，，那么怎样保证我在这道题上今后不出错不一定看is，因为也可能定语从句是修饰主语的。 关键是一定要保证 要有先行词+关系代词/副词+定语从句 。有时关系地刺、副词可以省略。其实你的这句话就省略了关系代词 可以说 This university is （the one）（that）your elder brother will choose this year