関係代名詞につく前置詞の位置問題。
通常前置詞というくらいなので、名詞や代名詞の前に置く
文語調であれば、関係代名詞の前に置くのが定石。
ただし、口語であれば、関係詞節の末尾に回す。
例を見てみよう
(1)普通の関係代名詞の前置詞の位置
She is the person for whom he has been looking. (文語調で改まった感じがする)
She is the person who he's been looking for.(口語調)
I sent him a copy of the new CD, in he has written.
I sent him a copy of the new CD, which he has written in.
★非制限用法(後述)のときは,のあとの関係代名詞は省略不可
(2)原則として関係代名詞の前に置かなくてはならない前置詞
①理由=末尾だとヘンだから
beside,beyond, during,expect,near opposite, outside, roundm since,,up
After ten years at Tokyo, during which I learned judo, I got Kuroobi-master.
②of で部分や一部を表す場合
The candidates were three people, of whom was selected by the chairperson.
★前置詞のすぐあとのWHOMは、WHOにすることはできず必ずWHOM
③前置詞+関係代名詞が副詞句として時や様態を表す場合
Everyone was surprised at the accuracy with which she could calculate the data.
with which= accurately
(3)原則として、文末に置く場合
群動詞(=句動詞ともいう、自動詞+前置詞の熟語)
come across= 出くわす
take after = 似ている