新概念第二册 Lesson21 Mad or not 单词精讲 mad /m d/ 【释义】adj.① 发疯的,神经错乱的 【例句】I have so much work to do. I'm going mad. 我有这么多工作要做,我快要疯了。 【释义】② 疯狂的,激动的,不理智的 【例句】The crowd made a mad rush for the exit. 人群疯狂地冲向出口处。 【释义】③ 特别喜欢,痴迷 【例句】He's always been mad about kids. 他一向特别喜欢孩子。 【释义】④ 极愚蠢的,很不明智的 【例句】It was a mad idea.那是个愚蠢透顶的想法。 【释义】⑤ 生气的,气愤 【例句】He got mad and walked out.他大动肝火,愤然离去。 【链接】crazy 疯狂的 upset 不安的 nervous 神经质的 【辨析】mad,crazy 1.mad 着重指疯狂的状态,愚蠢、轻率或失去理智而不能自控。 He went mad when he heard the bad news. 当他听到这个坏消息时,他变得疯狂起来。) crazy 有“入迷的”,“疯狂的”意思,也指古怪荒诞的行为或事情,也可指由于年迈、疾病或强烈刺激等引起的神经紊乱。 She is crazy about reading novels.(她对读小说非常入迷。) reason /'ri:z n/ 【释义】n. ①原因 【例句】He quit his job for reasons of health.他由于健康原因辞职了。 【释义】② 理由 【例句】I have no particular reason for doubting him.我没有什么特别的理由怀疑他。 【释义】③ 理性,理智 【例句】Only human beings are capable of reason. 只有人类才有理性思考的能力。 【释义】④ 道理,情理 【例句】I can't get her to listen to reason.我没法跟她讲道理。 【释义】vt.&vi. 推理,推论 【例句】I reasoned that he didn't come because he was ill. 我推想他没有来是因为他病了。 He always reasons from general laws. 他总是从一般规律去推理。 【搭配】by reason of由于,因为 in reason 合乎情理,在道理上 reason with sb.和某人讲道理 with (without) reason 有(没有)道理 sum /s m/ 【释义】n. ①量 【例句】A large sum of money has been lost. 有一大笔钱丢失了。 【释义】② 总数,和· 【例句】They have raised only half the sum they need. 他们只筹集到所需钱款的一半。 【释义】③金额 【例句】Should I write the sum of money in words not digits 金额要用文字,而不是用阿拉伯数字写吗 【释义】vt. 概括(summed,summed) 【例句】He summed up the main points of the meeting in a few sentences. (他用几句话概括了会议的要点。) determined /d 't :m nd/ 【释义】adj,坚定的,下决心的 【例句】:He is a determined person. 他是个意志坚定的人。 【联想】determined.→ determine /di'ts:min/u 作出决定 determination /dr ts:mr'nerfn/n.决心 重点句型 被动语态 被动语态可以和大部分情态动词连用(包括具有情态功能的will和would)。 He may have been told the news.The shops must have been closed now. The person must be taken care of by his son.(这个人一定要由他儿子照顾。) 含有情态动词的句子变为被动语态时,在情态动词后面直接加上be动词即可,它的句型如下: 肯定句:主语+情态动词(can,may,must等)+be(原形)+过去分词…… 否定句:主语+情态动词+not+be+过去分词…… 疑问句:情态动词(Can,May,Must等)+主语+be+过去分词……? We can easily download music from the Internet. (我们可以很容易地从互联网上下载音乐。) →Music can be easily downloaded from the Internet. (音乐可以很容易地从互联网上下载。) You mustn’t touch the exhibits in the museum.(你不可以触摸博物馆里的展览品。) →The exhibits in the museum ... ...