用所给动词的适当形式填空。1. My brother's ______ (write) habits are not good.2. My mom goes shopping ______ (two) a week.3. She tries ______ (eat) a lot of-八年级英语

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◆seldom意为“很少”;never意为“从不”。这两个副词表示否定意义,动作几乎不会发生。如:
He seldom eats breakfast. 他很少吃早餐。
The little girl seldom goes out. 这个小女孩很少外出。
I will never forget your kindness. 我永远忘不了你的好意。
The boys never eat chocolate and the girls seldom eat it. 男生从不吃巧克力,女生很少吃。
Btter late than never. [谚语] 迟到(迟做)总比不来(不做)好。

◆hardly具有否定意义,表示“几乎不、简直不”,除非特殊情况,否则不会发生。如:
The boy is so young that he could hardly understand it. 这个孩子太小了,不可能懂得这件事。

◆对上述频度副词提问时,用how often。如:
I write to my brother sometimes.
→How often do you write to your brother?

  • 频度副词在句中不同位置的用法比较:
    一、频度副词在否定句中的用法
    在否定句中,有的频度副词位于否定词之前或之后均可,而有的频度副词则必须位于否定词之后,而还有的频度副词却必须要位于否定词。
    大致情况如下:
    1. 频度副词usually和often可位于否定词not之前或之后。
    他们不常开这样的晚会。
    正:They don’t often hold such parties.
    正:They often don’t hold such parties.
    星期日我们一般不在9点以前起床。
    正:We don’t usually get up before nine on Sundays.
    正:We usually don’t get up before nine on Sundays.
    在否定句中,频度副词用于句中或句首,有时但会导致意思不同。
    He doesn’t usually sleep for two days at a time. 他很少一连睡两天。
    Usually he doesn’t sleep for two days at a time. 他连续两天不睡觉是常事。
    2. 频度副词always总是位于否定词之后,不可位于否定句之前。
    Things are not always what they seem to be. 外表往往是靠不住的。
    Silence must not always be read as consent. 沉默并不见得一定意味着同意。
    3. 频度副词sometimes总是位于否定词之前,不可位于否定词之后。
    Jim is sometimes not very punctual. 吉姆有时不太准时。
    Debbie is sometimes not responsible for what she does. 黛比有时对她所做的事不负责任。

    二、频度副词位于句末的用法
    1.sometimes常可用于句末。 如:
    We all get into trouble sometimes. 我们有时都会遇到麻烦。
    You can’t work all the time,it does you good to go out and enjoy yourself sometimes.
    你不能总是工作,有时出去放松一下会对你有好处。
    2. often有时可置于句末,但通常会带有very, quite, fairly, more, so等修饰语。如:
    We’ve been there quite often. 经常去那里。
    When I was young, I used to play tennis very often. 我年轻时经常打网球。
    Diana used to travel a lot. These days she doesn’t go away so often.
    娜过去经常旅游。最近她不常出门了。
    We're not exactly on intimate terms, but we see each other fairly often.
    虽算不上关系密切,但还常见面。
    注:有时也可不带修饰语,但主要见于否定句或疑问句。 如:
    He writes to me often. 他经常给我写信。
    Do you come here often? 你常来这儿吗?
    I don’t come here often. 我不常来这儿。
    3. usually有时也用于句末,其前不用修饰语。
    I’m not late, usually. 我通常不迟到。
    I get paid on Fridays usually. 我通常在星期五领工资。
    4.seldom 一般不用于句末,除非其前带有only,very等修饰。
    We go out very seldom. 我们绝少外出。
    I play basketball very seldom indeed. 我很少打篮球。
    5. always一般不用于句末,偶尔用于句末,此时它不表法“总是”,而表示“永远”。
    I’ll love you always. 我将永远爱你。
    另外,有时用于句末是因为句子有所省略的缘故。
    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。

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