按要求改写句子。 1. A: ___________________________________________________________?B: Yes, Dave is visiting his uncle.(完成疑问句) 2. does, take, how long, g-八年级英语

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Generally they walked together on Sunday, but not always.
他们一般在星期日一起散步,但并不总是如此。
句中的but not always=but they didn’t always walk together on Sunday。

三、频度副词位于句首的用法
1. sometimes常可用于句首。
Sometimes she comes late. 有时她来得晚。
Sometimes she didn’t agree with me. 有时她和我意见不一致。
Sometimes we get a lot of rain in August. 有时在8月份雨水很大。
2. often用于句首时,通常表示强调,且其前一般有quite, very修饰。
Very often he comes in late. 他常常迟到。
Quite often the phone rings when I’m in the bath. 电话经常在我洗澡时响。
3.usually有时也用于句首,其前不用修饰语。
Usually I get up early. 我平时起得早。
Sometimes he comes by bus, but usually he comes by taxi.
有时他坐公共汽车来,不过他通常还是打的来。
Usually cooking pots have two small handles but pans have one long handle.
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:介词短语

    • 介词短语:
      介词是一种用来表示词与词, 词与句之间的关系的词。在句中不能单独作句子成分。
      介词后面一般有名词代词或相当于名词的其他词类,短语或从句作它的宾语。介词与它的宾语构成介词词组,在句中作状语,表语,补语,定语或介词宾语。例如:at ,in, on, to
      介词短语在句中可以作状语,定语,表语,补足语等。
      1. 作表语
         例如:It was in 2005 in Beijing.
      2. 作宾语补足语
         例如:He found his dog outside the station.
      3. 作后置定语
         例如:I even store them in boxes under my bed.
      4. 作状语
         例如:You are supposed to put your bread on your plate.

    • 常见介词用法:
      1)at,in,on在……范围
      at (1)表示在小地方; (2)表示“在……附近,旁边”
      in (1)表示 在大地方; (2)表示“在…范围之内”。
      on 表示毗邻,接壤
      to 表示在……范围外,不强调是否接壤
      He arrived at the station at ten.
      He is sitting at the desk.
      He arrived in Shanghai yesterday.
      Jiangsu lies in the east of China.
      Russia live on the north of China.
      Fujian is to the south of Jiangsu Province.

      2)above, over, on 在……上
      above 指在……上方,不强调是否垂直,与 below相对;
      over指垂直的上方,与under相对,但over与物体有一定的空间,不直接接触。
      on表示某物体上面并与之接触。
      The bird is flying above my head.
      There is a bridge over the river.
      He put his watch on the desk.

      3)below, under 在……下面
      under表示在…正下方
      below表示在……下,不一定在正下方
      There is a cat under the table.
      Please write your name below the line.

    • 介词短语组织形式及实例:
      一、介词+名词形式
      第一组
      by accident 偶然
      on account of 因为,由于
      in addition 另外
      in addition to 除 …… 之外
      in the air 在流行中,在传播中
      on (the/an) average 平均,一般来说
      on the basis of 根据,在 …… 的基础上
      at (the) best 充其量,至多
      for the better 好转,改善
      on board 在船 ( 车、飞机 ) 上
      out of breath 喘不过气来
      on business 因公,因事
      in any case 无论如何,总之
      in case of 假使,万一
      in case 假如,以防 ( 万一 ) 免得
      in no case 决不
      第二组
      by chance 偶然,碰巧
      in charge (of) 负责,主管
      (a) round the clock 昼夜不停地
      in common 共用,共有,共同
      in conclusion 最后,总之
      on condition that 在 …… 条件下
      in confidence 信任
      in connection with/to 关于
      in consequence 因此,结果
      in consequence of 由于 …… 的缘故
      on the contrary 反之,正相反
      in contrast with/to 与 …… 成对照
      out of control 失去控制
      under control 被控制住
      at all costs 不惜任何代价
      at the cost of 以 …… 为代价
      第三组
      in the course of 在 …… 过程中,在 …… 期间
      of course 当然,自然,无疑
      in danger 在危险中,垂危
      out of danger 脱离危险
      out of date 过期 ( 时 ) 的
      up to date 时新的
      in debt 欠债
      in detail 详细地
      in difficulties 处境困难

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