句型转换。1. I can play computer games. (改为一般疑问句)______ play computer games?2. Betty is from America . (对划线部分提问)______ Betty from?3. —Do you-七年级英语

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通常地深底煮锅有两只把手而平底锅只有一个长长的把手。
4.always一般不用于句首,除非是用在祈使句中。
Always remember this. 请时刻记住这一点。
Always look in the mirror before starting to drive. 一定要先看看反光镜再开车。
另外,never也可用于祈使句的句首。
Never tell him the news. 千万不要告诉他这消息。
Never ask her about her marriage. 决不要问她结婚的事。
5.在正式文体中,表示否定意义的副词seldom, never可位于句首,但此时其后要用倒装语序。
Seldom has there been such a happy meeting. 过去很少有过这样愉快的会议。
Never did he think the book would be finished so soon. 他可没想到这本书会这么快看完
另外,once a year (每年一次), twice a week (每周两次), three times a day (一天三次), every Saturday afternoon(每星期六下午)等,
这些时间状语也表示频率,它们可以和频度副词用在同一个句子中,表达上没有重复。如:
We usually go to the cinema four times a month. 我们通常一个月看四次电影。

  • 频度副词的用法:
     频度副词是副词的一种,在初中阶段常用的有四个,即always, usually,often,sometimes。它们的用法如下:
    一、频度副词在句中的位置。
    1.频度副词在句中习惯上位于be动词、助动词之后,行为动词之前。如: 
    She is often late for school.她上学经常迟到。
    He usually goes to bed at about 12.他通常(午夜)十二点钟睡觉。
    When do you usually get up in the morning?早上你通常什么时候起床?
    2.sometimes是个特殊的频度副词,既可以放在be动词、助动词之后,行为动词之前,也可以放在句首,还可以放在句尾。如:
    I sometimes think that it is a great mistake.我有时想这是一个大错。
    Sometimes I help my mother in the house.有时候我帮助妈妈做家务。
    3.often可以放在句中,也可放在句尾,习惯上不放在句首。如: 
    We have been there quite often.我们经常到那儿去。
    She writes to me often. 她经常给我写信。
    4.如果有两个助动词,频度副词通常放在第一个助动词后面。如:

    We have never been invited to one of their parties. 他们聚会,一次也没邀请过我们。

    She must sometimes have wanted to run away. 她有时候一定想到过要逃走。
    5.这些频度副词的位置与句中谓语动词有无助动词有关。句中没有助动词时,副词置于动词be之后,其它动词之前。
    频度副词位于助动词之前两种情况:
    ①为了表示强调,频度副词有时也可位于动词be、助动词、情态动词之前,此时助动词等应重读。如:
    She always was late. 她老是迟到。
    I never can remember. 我永远也记不住。
    ②在简略答语中,当频度副词与动词be、助动词或情态动词位于句末时,频度副词必须前置。
    —“Philip is late again.”
    —“Yes, he always is.”
    —“菲利普又迟到了。”
    —“是的,他总是迟到。”
    — “Can you park your car near the shops?”
    —“Yes. I usually can.”
    — “你可以在商店附近停车吗?”
    —“是的,通常可以。”
    6.频度副词后的动词可以是动词的任何形式,具体什么形式和频度副词本身没有关系。
    如:
    I have never been to the moon.
     He sometimes goes to school by bike.
       
    二、表示频度方面的区别:
    1.always是频度最大的词,意为"总是;永远"。如:
      I shall always remember my first day at school.我将永远记住我上学的第一天。
    2.usually意为"通常",即很少例外,频度仅次于always。如:
      What do you usually have for breakfast?你通常早餐吃什么?
    3.often意为"经常",在频度上不如usually那么频繁。如:
      Li Ping often does his homework in the afternoon.李平经常在下午做作业。
    4.sometimes意为"有时候",频度比often小,表示动作偶尔发生,间断较大。如:
      1.I sometimes go to the library.我有时去图书馆。
      2.Sometimes I read a book in the evening.我有时在晚上看书。

    三、频度副词与not连用时,表示部分否定;对频度副词进行提问时,要用how often。如:
    1.A great scholar is not always a very wise man.大学者未必一定是极聪明的人。
    2.We go to the cinema sometimes.(对划线部分提问)
        How often do you go to the cinema?

  • 考点名称:主谓一致

    • 英语中的一致主要包括主语和谓语在人称和数上的一致、时态一致、名词和其代词的一致。
      主语和谓语保持一致叫主谓一致,即谓语动词的形式必须随着主语单、复数形式的变化而变化。

    • 主谓一致原则:
      1、语法上的一致
      所谓语法一致原则,即主语和谓语的语法形式在人称和数上取得一致。
      谓语的单、复数形式依据主语的单、复数形式而定:主语为复数,谓语动词用复数;主语为单数或者是不可数名词,谓语动词用单数。
      China belongs to the Third World. 中国属于第三世界。
      We are sure he will come. 我们肯定他会来。
      使用语法一致的情况
      (1)当主语是and,both…and连接的并列结构
      如果主语指的是两个或两个以上的人或物,则谓语动词用复数。
      My mother and I have seen the film. 我妈妈和我已看过这部电影。
      Both rice and wheat are grown in this part of China. 在中国的这个地方既种稻子又种小麦。
      注意:由and连接的并列主语前面分别有each,every,no修饰时,其谓语动词用单数形式。
      Every boy and every girl has to receive education in our country. 在我国每一个男女孩子都得受教育
      No student and no teacher was invited to the party. 师生没有被邀请参加晚会。
      (2)主语后面接说明主语的修饰语
      主语后面接说明主语的修饰语如:
      with,along with,together with,as well as,like,rather than,but,except,besides,including,in addition to,
      谓语动词不受修饰成分的影响,仍保持同主语一致的关系。
      The teacher with two students was at the meeting. 那位老师和两个学生参加了会议。
      The girl as well as the boys has learned to drive a car. 这个姑娘和男孩子一道,也学会了开汽车。
      A library with five thousand books is offered to the nation as a gift.一个有5000册书的图书馆作为礼物赠送给了国家。
      E-mail, as well as telephones, is playing an important part in daily communication.电邮和电话在日常的通信中起着很重要的作用。
      Nobody but Jane knows the secret.只有简知道这个秘密。
      All but one were here just now. 刚才除了一个人外都来了。
      (3)非谓语动词或从句作主语
      非谓语动词 (动词的-ing形式、不定式)或从句作主语时,谓语一般用单数形式。
      When and where to build the new factory is not decided yet.什么时候在什么地方建新工厂还没定下来。
      Checking information is very important. 核实事实是非常重要的。
      To learn foreign languages is not easy. 学习外语并非易事。
      When we will hold the meeting is not decided yet. 我们何时开会尚未决定。
      注意:当what引导主语从句或由 and连接两个动词不定式或动名词作主语时,谓语动词的数应根据意义一致的原则来决定。
      What we need here is money.我们这里需要的是资金。
      What we need here are workers.我们这里需要的是工人。
      Lying and stealing are immoral.说谎与偷窃是不道德的。
      (4)each和复合不定代词作主语
      each和some/any/no//every十body/one/thing构成的复合不定代词:
      anyone、anybody、anything、everyone、everybody、everything、someone、somebody、something、no one、nobody、nothing、each、the other作主语,谓语动词用单数。
      Each is worse than the one before. 一个比一个差。
      Nobody knows the answer. 没有一个人知道这答案。
      Someone wants to see you. 有人想见你。
      Is there anything in the box?箱子里有什么东西吗?
      There is a lot of milk in the bottle. 瓶子里有很多奶。
      (5)“many a +单数名词”作主语
      “many a、(很多)/more than one(不只一个)+单数名词”作主语时,谓语动词用单数形式。
      Many a student has been to Beijing. 很多学生去过北京。
      There is more than one answer to your question. 你的问题不只有一个答案。
      (6)“one of+复数名词十定语从句”之前有the等限定词和修饰语
      “one of+复数名词十定语从句”之前有the only,the very,the等限定词和修饰语时,定语从句的谓语动词用单数形式。
      Tom is the only one of those boys who is willing to help the old man.
      汤姆是唯一的一个愿意帮助那个老人的男孩。
      He is the only one of the students who has been a winner of scholarship for three years.他是这三年来唯一的一个获得奖学金的学生。
      注意:如没有这些限定词和修饰语,定语从句的谓语动词采用复数形式。
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