問題詳情

66. Raymond seems to know all the answers to the questions. He _____ have studied his lessons very hard last night.
(A) should
(B) must
(C) would
(D) ought

參考答案

答案：B
難度：簡單0.72886
統計：A(177),B(793),C(79),D(39),E(0)

用户評論

【寂寞行星】評論

must have p.p. 則是 ”(當時/之前) 一定是...” 的意思ought to 後面用 have ＋ p.p.，表示「應該做，可是沒做」I knew I ought to have written to him. 我知道我是應該給他寫信的（可是我沒寫）

【寂寞行星】評論

must have p.p. 則是 ”(當時/之前) 一定是...” 的意思ought to 後面用 have ＋ p.p.，表示「應該做，可是沒做」I knew I ought to have written to him. 我知道我是應該給他寫信的（可是我沒寫）