When the Japanese students watched the film 17 the teacher present, their faces showed only the slightest hints of reaction.
答案：(D) with
【句型】with + 受詞 + 形容詞/分詞，with the teacher present 表示「在老師在場的情況下」這個伴隨狀況。of／as／from 都無法構成這種「with + 受詞 + 補語」的獨立結構。
present 這個字，你的印象大概只有名詞的「禮物」與形容詞的「現在的」，最多再加一個動詞「呈現」，不太會想到它當形容詞還有「在場的、出席的」這個意思。present 一讀錯，整個句子的結構就跟著塌掉，於是回頭在幾個介系詞裡憑感覺挑一個。
答對率四成，鑑別度只有 26，是本批唯一的低鑑別度題。這一題難，卻連高分群考生也常失手，原因不在句型沒學過——with ＋ 受詞 ＋ 受詞補語（表附帶狀態）是課本長教的句型；難的是這一格的受詞補語是形容詞 present，對這個句型越熟的人，越會去找一個長得像分詞的補語，present 不像分詞，反而先被排掉。先看結構：空格後面是 the teacher（受詞）加 present（補充說明老師處於什麼狀態），還原成完整子句就是 the teacher was present（老師在場）。能還原成「受詞是／處於那個狀態」，就確定是這個句型，空格填 with。整句讀成 watched the film with the teacher present（在老師在場的情況下看那部片）。同一篇的第 20 題正好從另一個角度講同一件事：那一格的答案 in the presence of 裡的 presence，就是 present 的名詞形，兩題擺在一起，present 的「在場」義從形容詞與名詞各講一次。
of、as、from 這三個介系詞後面都只能接名詞或名詞組，接不了「受詞加補語」這兩層；把它們填進去，the teacher present 就變成一團沒有結構的字。
with ＋ 受詞 ＋ 受詞補語（表附帶狀態）、with the door open（門開著）、with tears in her eyes（眼裡含著淚）、present（形容詞：在場的、出席的）、the slightest hint of（一絲一毫的跡象）、be absent from（缺席、不在）。
People may express their feelings differently on different occasions. Cultures sometimes vary greatly in this regard.
A group of researchers in Japan, 16, studied the facial reactions of students to a horror film. When the Japanese students watched the film 17 the teacher present, their faces showed only the slightest hints of reaction. But when they thought they were alone (though they 18 by a secret camera), their faces twisted into vivid mixes of anguished distress, fear, and disgust.
The study also shows that there are several unspoken rules about how feelings should be 19 shown on different occasions. One of the most common rules is minimizing the show of emotion. This is the Japanese norm for feelings of distress 20 someone in authority, which explains why the students masked their upset with a poker face in the experiment.