Question

如下问题英语选择题

The english play____my students acted at the New Year's party was a great success.
for which
at
in
on
选哪个介词，懂的来

Answer 1

答案：in which

解释：
分析句子结构如下：
1. 主句为：The English play was a great success.
而该主句的主语The English play（即为先行词）被定语从句所修饰。
2. 根据定语从句的语法要求，将先行词代入该从句，得：
my students acted (in the English play) at the New Year's party
= my students acted (in which) at the New Year's party
我的学生在新年晚会时在英语戏剧中演出。
3. 很明显，该从句中的act是不及物动词，必须加介词in后，才能加代替先行词the English party的关系代词which做其宾语。
act in an English play 在一部英语戏剧中演出/表演

Answer 2

for which. 这是一个定语从句。整句的意思是我学生在元旦晚会上表演的那个英语剧很成功。
可以还原成My students acted for the English play at the New year's party was a great success. which 做后面一个句子的宾语，代指English play.

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为什么答案是 in

Answer 3

for which 本句是一个限定性定语从句，act后面本来应该跟for，本来应该是my student act for the English play换成定语从句后，由act 后缺少的介词for加疑问词which ，以后做同类题，看动词后缺少什么介词，就选哪个介词再加疑问词，如arrive at,用at .join in 用in 再加疑问词， 很认真的回答，望采纳。

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为什么答案是 in

Answer 4

in