[10-20 18:10:12] 来源：http://www.67xuexi.com 高二英语 阅读：85595次
(3) remind后可跟从句。① May I remind you that time will soon be off? 请允许我提醒你，时间快到了。② The sight of the clock reminded me that I was late.看到了钟提醒了我，我迟到了。③ That reminds me that I have a meeting to attend this evening. 这使我想起今晚我还有一个会议要参加。④ I had to remind myself that being confident is not the same as being perfect.我不得不使自己注意，表现得自信并不等于完美。
21. Before the discoveries, it was believed that Sichuan only had a history of about 2,300 years.在这些发现之前，人们认为四川省只有2300年的历史。(p. 79 Integrating Skill 第三段 第1行)
▲ it was believed句型很常见，是一个以it作形式主语，真正的主语是一个从句放在句末，动词通常是表示思考、建议，要求，报道等意义的词。现小结如下：
It is thought that... 据认为......
It is proved that... 据证明......
It is known that... 众所周知......
It is suggested that... 据建议......
It is believed that... 据信......
It is reported that... 据报道......
It is announced that... 据宣布......
It is said that... 据说......
It is requested that... 据要求......
It is demanded that... 据要求......
① It was reported that half a million workers were on strike in their country. 据报道他的国家有五十万工人罢工。② It has been announced that their country will send up another man-made satellite next month.据宣布他们的国家将在下月再发射一颗人造地球卫星。③ It has been decided that the sports meet will be put off till next Thursday. 据决定运动会推迟到下周四召开。④ It is suggested that they set out tomorrow. 据建议，他们明天出发。⑤ It was demanded that the working conditions be improved as soon as possible. 据要求工作条件要尽可能快地改进。⑥ It is required that we work eight hours a day.我们要求一天工作八小时。
【注】在动词require，demand，suggest，order等后的that从句中，谓语动词用原形或"should + 动词原形"，这是虚拟语气的一种形式，如例句④⑤⑥。
22. ... when his son dug up a round piece of jade.他的儿子挖得了一块圆形玉石。(p. 79 Integrating Skill 第四段 第2行) ▲dig up
(1) dig up意思是"挖出""挖掘""翻挖"。如：① They dug up an old Greek statue.他们挖掘到一尊希腊雕像。② They are digging up the road behind the park.他们正在挖掘公园后面的那条路。③ These relics were dug up last year. 这些文物是去年出土的。④ The archaeologists have dug up some interesting remains. 考古学家挖掘出一些有趣的古物。
(2) dig up可引申为"找出""翻出"之意。① It's a lovely picture. Where did you dig it up? 这张画很好玩，你在哪儿找出来的? ② His description fits perfectly the evidence dug up by Henry. 他的叙述与亨利找出的证据完全吻合。 ③ The fact is true, but where did you dig it up? 那事实不假，但你是在哪里发现的?
23. ...but none of them could say in which dynasty the jade objects were made. 但是没有一人能说出这些玉器是产自哪个朝代。(p. 79 Integrating Skill 第四段 第3行) ▲ none
(1) none主要用作代词，在这里表示"没有人"。如：① None of them could speak French. 他们谁也不会讲法语。② A friend to all is a friend to none. 和谁都是朋友的人和谁都不是真朋友。③ None of her children has blond hair. 她的孩子没有一个是金发的。④ None of the passengers were aware of the danger. 旅客中无人觉察到险情。
(2) none也可以指物或动物，表示"没有一个"。① I like none of the books. 这些书我全不喜欢。② None of the rooms are ready. 房间一个也没准备好。③ "How many fish do you catch?" "None." "你捕到多少鱼?""一条也没捕到。"
【注】none常用在"none + of + 名词"结构中，而nobody, no one或nothing不能用于这种结构中。例如我们可以说None of the pens are / is his. 没有一支钢笔是他的，但不能说No one of the pens is his.。
(3) none用作主语时，谓语动词既可用单数，也可用复数表示"所有的都不"时动词用复数形式。如：① None of us are perfect. 我们都不是完人。② None of the answers are right. 所有的答案都错了。
(4) 若表示"其中一个也不"时，谓语动词用单数形式。如：① None of his friends has been to London.他的朋友中没有一个去过伦敦的。② None of them has any great ability. 他们中间没有一个有大本事。
【注】但在很多情况下单复数的界限并不十分清楚，故常常用单数或复数均可。如： None of the telephones is / are working. 电话机都坏了。
【注】none of后接的名词是限定性的。如： ① We saw none of the students whom we discussed earlier. 我们早先讨论过的学生，一个也没见到。② We drank none of the wine that you brought. 你带来的酒我们一点儿也没喝若是非限定性的，则应用"no + 名词"。如：① We saw no students. 我们没有看到学生。② We drank no wine. 我们没喝酒。
【注】另外当none代表"no + 名词"时，不可用no，nobody或nothing代替。如：① She has a tape-recorder, but I have none (= no tape-recorder). 她有一台录音机，但我却没有。② Tom has a lot of friends, but Jim has none (=no friends). 汤姆有许多朋友，但吉姆没有朋友。
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