I'm working now, am't I? 我在工作，是吗？ 　　
5. 陈述部分的主语是everything, nothing, anything或something 时，反意疑问句的主语应用代词it。例如： 　　 
Something is wrong with my radio, isn't it? 我的收音机出毛病了，是吧？ 　　
6. 陈述部分的主语是 everybody, everyone, anybody, anyone, somebody, someone, nobody, no one, none, neither 时, 其反意疑问句的主语需用复数代词they。 例如： 　　
Everyone is here, aren't they? 大家都到了，是吗？ 　　
No one knows about it, do they? 没有人知道这件事，对吗？ 　　
7. 陈述部分的主语是指示代词this或that时，反意疑问句的主语用it，当陈述部分的主语是指示代词these或those时，其反意疑问句的主语用they。 例如： 　　
This is a plane, isn't it? 这是一架飞机，是吗？ 　　
These are grapes，aren't they? 这些是葡萄，是吗？ 　　
8. 陈述部分的主语是不定代词one时，反意疑问句的主语可以用one，也可用you(美式英语用he)。例如： 　　
One should be ready to help others, shouldn't one? 每个人都应该乐于助人，是吧？ 　　
9. 当陈述部分含有以下这些含有否定意义的词时：few, little, seldom，hardly, never, not,  no, no one, nobody, nothing, none, neither等，其反意疑问句需用肯定结构。 例如： 　　 
He is never late for school, is he? 他上学从不迟到，是吗？ 　　
10. 当陈述部分所含的否定词是通过加前缀或后缀构成的，其后的反意疑问句依然用否定结构。例如： 　　
   It is unfair, isn't it? 这不公平，是吧？ 　　
11.含有否定含义的词在陈述部分作动词的宾语时，其反意疑问句用肯定结构，也可以用否定结构。例如： 　　
You got nothing from him, did you? 你从他那儿什么也没得到，是吗？ 　　
12. 当陈述部分主语是从句、不定式(短语)、动词-ing形式时，反意疑问句的主语应该用it。  例如： 　　
What you need is more important, isn't it？你需要的东西更重要，是吧？ 　　
13. 当陈述部分含I think (believe, suppose...)that... 结构时，其反意疑问句须与从句的主、谓语保持一致，注意主句的主语必须是第一人称。例如： 　　
I don't think he will come, will he? 我认为他不会来，对吗？ 　　
14.have(has)不是表示“有”的意思，并在句中做谓语时，其反意疑问句的助动词要用do, does, did。例如： 　　
They had a meeting just now，didn't they? 他们刚才开了个会，是吗？ 　　
15. 陈述部分有have to 时，其反意疑问句要用助动词的否定形式。例如： 　　
You have to water the vegetables every day, don't you?你每天都要浇菜，对吧？ 　　
16. 陈述部分是there be句型时，其反意疑问句中要用there。例如： 　　
There was a hospital here, wasn't there? 过去这儿有家医院，是吗？ 　　
17. 陈述部分有had better时，反意疑问句中要用hadn't。 例如： 　　
We had better go to school at once, hadn't we? 我们现在最好马上去上学，好吗？
18. 当陈述部分含有情态动词must时，我们便要分析一下must的含义。如果must 作“一定；要；必须”讲，反意疑问句须用mustn't或needn't；
而当must作推测意义“一定 是；必定”讲时，反意疑问句则需根据must后的动词原形选用相应的形式。例如： 　　 
He must work hard at physics, mustn't he? 他必须努力学物理，是吧？ 　　
Tom must be at home，isn't he? 汤姆一定在家，是吧？

考点名称：it 的用法

• “It”用法及其句型和固定搭配，是英语语法的重点、难点，又是近几年考试的热点，因此在复习中应给予足够的重视。

• It 句型归纳：
  1． It is ＋adj．(＋for sb．／sth．) ＋ to do sth．
  用于此句型的形容词有：easy， hard， difficult，possible， important， impossible， necessary， good， bad， exciting， interesting， surprising等。如：
   It is necessary to change your job．
   It was very hard for them to walk such a long way in the snow．
  2．It is ＋n．(＋for sb．／sth．) ＋ to do sth．
  用于此句型的名词有： pity, shame, pleasure, one’s duty, one’s job, fun, joy, good manners, bad manners等。如：
   It is a pity for you to have missed such a wonderful play．
   It is bad manners for the young to take up the seats for the old．
  3．It is ＋adj．＋of sb．＋to do sth．
  此句型中的形容词主要描述某人的品德、特征。能用于该句型的形容词有： kind, nice, wise,
  silly, polite, impolite, friendly, foolish, clever等。如：
   How silly it was of you to give up such a good chance！
   It is friendly of the family to try to make me feel at home in their house．
  4．It is ＋adj．（＋n．）＋doing sth．
  此句型中的形容词和名词常见的有：no／little use, no／much good, useless等。如：
   It’s no use crying over spilt milk．
  5．It takes sb．＋一段时间＋to do sth． 表示“做某事花费某人多长时间”。如：
  It took us half an hour to ride to the town by the sea．
  6．It is ＋及物动词的过去分词＋that从句
  此句型中常见的及物动词的过去分词有：said, told, known, reported, recorded, thought, believed, considered等。如：
  It is reported that the Russian President will visit China next week．
  7．It ＋不及物动词＋that从句
  此句型中不及物动词常见的有：seem， happen， appear， matter等。如：
   It seems that there will be a heavy snow tomorrow．
   It happened that I met my good friends in the museum yesterday．
  8．强调句型：It is＋被强调部分＋that／who从句
  在使用强调句型时要注意，指人时可以用who或that，其它情况一律用that。如：
   It was under the bed that my brother hid the ball this morning．
   It is Mr Bell who／that often comes and looks after the old man．
  9．It is／has been＋一段时间＋since从句。如：
  It is ／has been three years since we saw each other last．
  10．It is (high) time that sb． did sth．
  该句型表示“某人现在该做某事了”，从句常用过去时（虚拟语气）说明现在应该做的事情。如：
   It’s six o’clock．It is high time that we went home now．
  
  It 常用的固定搭配：
  1. make it
  （1）在口语当中相当于succeed，表示：成功、做到、说定、赶上、及时到达
  例  It's hard to make it to the top in show business.
  （2）在口语中相当于fix the date for，表示“约定好时间”
  例  —Shall we meet next week？
  —OK. We just make it next Saturday.
  2. as it is
  （1）相当于in fact，in reality表示“事实上，实际情况是……”
  例  We had planed to finish the task today，but as it is we probably won't finish it until next week.
  （2）相当于方式状语从句，表示“照原样”
  例  Leave the table as it is.
  3. as it were
  相当于as one might say，that is to say，表示“也就是说，可以说，换句话说”
  例  He is，as it were，a modern Sherlock Holmes.
  4. if it weren't for…/if it hadn't been for…
  用来引导虚拟语气，相当于without，or but for，表示“如果不是……，要不是……”
  例  If it weren't for Tom，I wouldn't be alive today.
  5. that's it
  （1）相当于That's all. That's so much. 表示“至此为止，没有别的了”
  例  You can have one more sweet，and that's it.
  （2）相当于 That's right.表示“对啦”
  例  — I guess the key to the problem is thechoice “A”
  —That's it.
  6. catch it
  在口语中，相当于be punished/scolded for doing sth. wrong. 表示“因做错事而挨骂，受责备，受批评，受惩罚”
  例  We'll really catch it form our teacher if we're late for class again.
  7. have it
  （1）相当于say，insist表示“说，主张，表明，硬说”
  例  Rumour has it that they are getting divorced.
  （2）相当于get to know something，表示“了解，知道，获悉”
  例  I had it from John that she was going abroad.
  8. have what it takes
  在口语中，相当于be well qualified for，表示“具有成功的条件”
  例  You can take it from me that your daughter has what it takes to be a star.
  9. so it seems / appears.
  10. Keep at it！（Don't give up！）
  相当于go on，表示“继续做，不放弃”
  例  My teacher asked me to keep at it.
  11. Go it！（Go on！）拼命干，莽撞
  12. Now you have done it！（You have done sth. wrong.）
  13. Now you'll catch it！（You'll be punished.）
  14. As it happened，…
  在口语中，相当于it's a pity that…，表示“真不凑巧，真遗憾”
  例  As it happened，they were out.