Suddenly, they heard a voice behind them.
突然他们听到身后有声音。
新概念英语第一册
Lesson 119 A true story
📚 句中词汇解析
从本句中提取的重要词汇
adv. 意外地，忽然地;奄;勃;霍然;
💡 sudden突然的 + ly ...地 → adv.突然地
"Suddenly he found himself awake and fully alert."
突然他发觉自己醒了过来，而且高度警觉。
近义：impromptu, inadvertently, abruptly, offhand, overnight, sharply
反义：progressively, slowly, sparingly, stingily, inchmeal, consecutively
prep. （表示位置）在…的后面;支持;（表示顺序）在身后;（表示比较）落后于;
adv. 在后面;向后;在后面较远处;（落）在后面;
n. 〈口〉屁股;
💡 be构成一些介词+hind藏在后面→在…后面
"The crowd had to stand behind barriers."
人群只好站在障碍物后面。
近义：back, posterior, rear, rearward, lagging, late
反义：quick, rapid, accelerated
n. 嗓音;（动词的）语态;呼声，发言权;歌唱才能;
vt. 发音;表达，说出;给（一部乐曲）配上声部;给（如管风琴音管）整声;
"an amiable tone of voice"
亲切的声调
近义：articulate, mouth, phrase, pronounce, release, reveal
v. 听到，听见( hear的过去式和过去分词 );听说;得知;听取;
"We now enjoy these comforts of which formerly we had only heard."
我们现在享受到了过去只是听说过的那些舒适条件.