新概念英語第二冊：第48課課文詳解及語法解析 課文詳注 Further notes on the text 1.Dentists always ask questions when it is impossible for you to answer. 牙科醫(yī)生們總是在你無法作出回答的時候向你提出問題。 在when引導(dǎo)的時間狀語從句中，it為先行主語，代指后面的不定式，for+人稱代詞/名詞說明不定式表示的動作是誰做的： It is not hard for you to help them. 你協(xié)助他們并不難。 It was a mistake for me to come to the party. 我來參加晚會是錯誤的。 impossible通常不以人作主語，而以不定式或從句作主語： It is impossible for him to help you. 他不可能幫你。 It is impossible that he will help you. (譯文同上) 2.In answer to these questions I either nodded or made strange noises. 作為對這些問題的回答，我不是點頭，就是發(fā)出奇怪的聲音。 (1)in answer to為固定短語，在這里表示“作為對的回答”： In answer to my question, Dan shook his head. 作為對我的問題的回答，丹搖了搖頭。 這個短語的另一個含義是“響應(yīng)的請求”： In answer to my request, he wrote a letter to George. 應(yīng)我的請求，他給喬治寫了封信。 (2)made strange noises, 發(fā)出奇怪的聲音?！拔摇辈⒉皇怯幸獍l(fā)出這些聲音，而是因為嘴里有藥棉，又想回答醫(yī)生的話造成的。 3.Meanwhile, my tongue was busy searching out the hole where the tooth had been. 與此同時，我的舌頭正在忙著尋找剛拔掉的那顆牙的傷口。 (1)副詞meanwhile表示“在此期間”、“與此同時”： He wont come until ten oclock. Meanwhile you can have a rest. 他10點以前不會來。在此期間你能夠休息一下。 Mary was talking to me about her new dress. Meanwhile I was thinking about something else. 瑪麗在和我講她的新衣服。與此同時我卻在想著其他事情。 (2)search out表示“找出”、“查出”、“搜出”等： Have you searched out the books I needed? 你找出我需要的書了嗎? (3)where the tooth had been用的是過去完成時，因為在描述這件事的時候那顆牙已經(jīng)不在了。牙齒尚在的時間是“過去的過去”。 4.When the dentist at last removed the cotton wool from my mouth 當(dāng)那位牙醫(yī)最后將藥棉從我嘴中取出時 remove能夠表示“拿去”、“除去”、“去掉”，通常結(jié)構(gòu)為“remove +名詞+from”;它也能夠單獨使用： Ive removed that picture from the wall. 我已經(jīng)把那幅畫從墻上拿走了。 Please remove your hat. 請摘下你的帽子。 語法 Grammar in use 復(fù)習(xí)第2645課的部分語法 It is one of the ugliest faces(that) I have ever seen. 這是我見過的最丑陋的頭像之一。(that在關(guān)系從句中作賓語，可省略) There arent many students who sing as well as she does. 在學(xué)生當(dāng)中沒幾個人唱歌像她那么好。(who在關(guān)系從句中作主語，不可省略) People are not so honest as they once were. 人們不再像以前那樣誠實了。(not so/ asas用于比較狀語從句) He had hardly had time to settle down when he sold the house. 他還沒等安頓下來就賣掉了房子。(hardlywhen用于過去完成時) No sooner had I sat down than he came in. 我剛坐下他就進來了。(no soonerthan用于過去完成時;否定詞位于句首時句子要倒裝) The box was so heavy that she couldnt lift it. 箱子太重了，她搬不起來。(so+形容詞+that表示“如此以至于”) The thief got such a fright that he dropped the ba