ItoldSallyhowtogethere, butperhapsI

問題詳情：

 I told Sally how to get here,  but perhaps I ________ for her. 

A. had to write it out

B. must have written it out

C. should have written it out

D. ought to write it out

【回答】

【解析】選C。“ought to/should have+過去分詞”表示後悔當初該做但卻沒做某事。後半句句意：“……也許我本該把地址詳細寫給她的。”

知識點：虛擬語氣與情態動詞

題型：選擇題