高考英语必背3500单词word版解析和快速记忆+乱序听mp3录音下载

高考英语必背3500单词word版解析和快速记忆+乱序听mp3录音下载

下载地址

across  prep.1.穿过，到…的另一边：There is a bridge across the river. 河的两边有桥相连。2.在…的另一边：The bus stop is just across the street. 公共汽车站就在街道的那边。3.表示“交叉”：He sat there with his arms across his chest. 他坐在那儿，两臂交叉放在胸前。adv. 1.穿过，跨过，从一边到另一边：Can you swim across? 你能游到对岸去吗？2.交叉：He sat there with his arms across. 他交叉着手臂坐在那儿。
【辨析】across 与 through：前者指在面上穿过，后者指在里面或在一定空间范围内穿过：walk across the playground 走过操场 / walk through a forest 走过森林
【说明】across 用作介词或副词，不能用作动词，cross才是动词：go across a bridge 过桥 / cross a bridge 过桥

act   n.1.[C]行为，行动，举动：It’s a foolish act. 那是愚蠢之举。2.[C]法令，条例：Social Security Act社会保险条例 / under this Act 根据本条例3.[C](戏剧的)一幕：a play of two acts 两幕剧 v. 1.行动，做事，举止：Think before acting. 三思而后行。/ It’s time to act. 该采取行动了。2.表演：He acts well. 他戏演得不错。3.担任，充当：A trained dog can act as a guide to a blind person. 经过训练的狗可作盲人的向导。4.起作用，生效：The medicine acts on the heart. 这药对心脏起作用。5.扮演：He acted (the part of) Hamlet very well. 他扮演哈姆雷特(这个角色)很出色。■1. act as 充当，起…的作用：He acts as director of the workshop. 他担任车间主任。2. act for 代理，代表：The chairman is ill, so I’m asking Mr Smith to act for him. 因为主席有病，所以我请史密斯先生代理。

(责任编辑：谷雨英语单词速记网)