sat的几个语法问题?

题目

sat的几个语法问题?
1 one of the playwright's hopes was that the play would shock theatergoers; instead,it suceeded only in confusing them.为什么这里用would呢?
2 sb was an artist （（ who serves）） apprenticeships before going on to a successful career.括号部分为什么错了?
3 my dog won more awards at obedience trials than my brother's dog.这里的答案是狗和狗作比较,但是我怎么觉得是狗做这件事进行比较呢（另一个答案than my brother's dog wins）请问我的想法哪里错了?

答案

1 是时态问题.was 和would 相对一致.如果是is的话,would就变成will了-----is 和will相对一致：one of the playwright's hopes IS that the play WILL shock - - -. 2 如果括号里面是 who serves as / who served as...