Question

单项选择题求解释

were you successful __ persuading him to change his mind?
a.by b.in
这道题选择in的解释是什么呢？

Answer 1

were you successful __ persuading him to change his mind?
a.by b.in
这道题选择in的解释是什么呢？

可以理解成固定搭配，“in”表示“在某个方面...”

以上来源于《朗文当代高级英语辞典》

Answer 2

by通常表示“通过”，通过说服别人取得成功，这种表达不怎么讲的通的。
其实用这里就是英语中固定搭配， succeed in doing sth/ be successful in doing sth 通常都是用in来搭配，不管是succeed动词形式，还是形容词successful。

Answer 3

在......方面
句子变成陈述句，就是you are successful in persuading him change his mind.
在推动他改变想法这方面你成功了。