Be appointed manager：是任命的經(jīng)理
be promoted to manager：將會升任為經(jīng)理（be promoted to —— 被動式動詞詞組）親 我問的是 為什么appoint后便不加介詞 謝謝因為這里不需要。to appoint 通常接雙賓語（所謂直接和間接賓語）：I appointed John the manager of the sales department. 當(dāng)用被動式表達時，直接賓語做主語，間接賓語留在賓語的位置，無需介詞：John was appointed the manager of the sales department. to promote sb to...是動詞詞組，介詞是其中一部分。所以在變成被動式以后，介詞 to 必須保留。