改错。1. Eddie, have you see my food? A B C D ( ) __________2. I have known his sister five years ago.A B C D( ) __________3. I real don't know where he is-八年级英语

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常带有for和since等表示一段时间的状语。如:
He has taught here since 1981
他自1981年就在这儿教书。(可能还要继续教)
I have't seen her for four years.
我有四年没见到她了。
3.表示说话前发生过一次或多次的动作,现在成为一种经验,一般译为汉语“过”。
常与twice,ever,never,three times等时间状语。 如:
I have been to Beijing twice.我去过北京

4. 现在完成时还往往可以同包括现在时间在内的时间状语连用,如:
now,up to these few days/weeks/months/years,this morning/week/month/year,just,today,up to present,so far等:
Peter has written six papers so far.
Man has now learned to release energy from the nucleus of the atom.
There has been too much rain in San Francisco this year.
The friendly relations and cooperation between our two countries have been enhanced in the past few years.
Up to the present everything has been successful.

5.现在完成时往往同表示不确定的过去时间状语连用,如:
already(肯定),yet(否定,疑问),just,before,recently,still,lately,never等:
He has already obtained a scholarship.
I haven't seen much of him recently (lately).
We have seen that film before.
Have they found the missing child yet?

6.现在完成时的"完成用法"
现在完成时的"完成用法"指的是动作发生在过去某一时刻并已结束,但该动作对现在产生了影响,与现在情况具有因果关系。
例如:
He has turned off the light.他已把灯关了。(动作结束于过去,但说明的是现在的情况--灯现在不亮了。)
现在完成时"完成用法"的特点是动作不延续,因此:
该时态只能与表示不定的过去时间状语(如:already,yet,before,recently等)、频度时间状语(如:never,ever,once等)、包括现在时刻在内的时间状语(如:this morning / month /year...,today等)连用。
例如:Have you found your pen yet?你已找到你的钢笔了吗?
7.现在完成时的"未完成用法"
现在完成时的"未完成用法"指的是动作开始于过去某一时刻,一直延续到现在,或可能还要继续下去。
例如:
He has lived here since 1978.自从1978年以来,他一直住在这儿。
(动作起始于1978年,一直住到现在,可能还要继续住下去。)
I have been in the army for more than 5 years.我在部队已经呆了五年多了。
(动作开始于5年前,一直延续至今,有可能还要继续下去。)
此种用法的句中常需一个表示一段时间的状语(由since或for引导),或表示与现在时刻相连的时间状语(如:up to now,so far)等。
例如:
I have heard nothing from him up to now.到目前为止我没有他的任何消息。
注意:现在完成时的未完成用法只适用于延续性动词,不可用于终止性动词,即瞬间完成或延续时间很短的动词。
如:come,go,arrive,leave,join,become,die等。
8.一段时间+has passed+since从句
主语+have / has been+since短语
例如:He has been in the League for three years.
或It is three years since he joined the League. 他入团已三年了  
9. 现在完成时常和短语 "up to now /till now","so far" (意思是从过去某一确定的时间一直延续到现在)连用。  
Up to/till now he's read many story books. 至今他已读过好多故事书。
I've been to New York three times so far. 至今我已到纽约去过三次。
has gone (to),has been (to),has been (in) 的区别
has gone to:去了没回
has been to :去过
has been in:呆了很久

考点名称:副词

  • 副词:
    是一种用来修饰动词、形容词、全句的词,说明时间、地点、程度、方式等概念的词。副词是一种半虚半实的词。
    副词可分为:地点副词、方式副词、程度副词、疑问副词和连接副词。
    副词连用顺序:程度副词+方式副词+地点副词+时间副词。

  • 副词分类:
    1、时间副词有三类:always, often, usually, sometimes, never, ever, hardly等一般位于系动词、情态动词和助动词之后,实之前义动词
    1)表示发生时间的副词:
    It’s beginning to rain now!  现在开始下雨了!
    2)表示频繁程度的副词,也称频度副词always, often, usually, sometimes, never, ever, hardly等一般位于系动词、情态动词和助动词之后,实之前义动词:
    She often changes her mind.  她常改变主意。
    3)还有一些其他表示时间的副词:
     He has just had an operation. 他刚动过手术。
    2、地点副词:
    1)有不少表示地点的副词:
    She is studying abroad.  她在国外留学。
    2)还有一些部分与介词同形的副词。它们与介词同形,跟宾语的是介词,否则是副词:
    ①用作介词:Stand up!  起立!
    ②用作副词:A cat climbed up the tree.  猫爬上了树。
    3)以where 构成的副词也是地点副词: 
    It’s the same everywhere.  到处都一样。
    3、方式副词:
    carefully, properly(适当地), anxiously(焦虑地), suddenly, normally(正常地), fast, well, calmly(冷静地), politely(有礼貌地), proudly(自豪地), softly, warmly ,slowly
    4、程度副词:
    much,little, very,rather(相当),so,too,still, quite, perfectly(完美地), enough, extremely(非常), entirely(整个),almost, slightly(细小地), hardly.
    5、疑问副词:
    how, when, where, why.
    6、关系副词:
    when, where, why.等。
    7、 连接副词:
    therefore(因此),moreover(此外),however,otherwise(另外的),then,when ,where,how,why等。

    副词的语法作用:
    副词在句中可作状语,表语,补语,定语。
    He works hard. (作状语)
    他工作努力。
    You speak English very well. (作状语)
    你英语讲的相当好。
    Is she in ? (作表语)
    她在家吗?
    Let's be out. (作表语)
    让我们出去吧。
    Food here is hardly to get. (here作定语,hardly作状语)
    这儿很难弄到食物。
    Let him out!(作补语)
    让他出去!
    修饰名词的副词放在被修饰词之后
    a. The villagers there are busy getting in wheat.

  • 不同类型副词的用法比较:
    方式副词:
    1)英语中有大量方式副词,说明行为方式(回答how的问题):
    How beautifully your wife dances.  你夫人舞跳的真美。
    2)还有相当多的副词,表示某些情绪:
    She smiled gratefully.  她感激的笑了笑。
    3)还有一些以-ly结尾的副词,表示动作发生的状况:
    He left the town secretly. 他悄然离开了这座城市。

    程度副词和强调副词 :
    1)程度副词可修饰动词,表示“到某种程度”:   Is she badly hurt?  她伤得重吗?
      [说明] 这类副词除修饰动词外,还可修饰形容词(a)或另一副词(b):
    a. fairly simple 相当简单      quite correct 完全正确
    b. wonderfully well 好极了    do it very quickly 干得很快
    2)much 是一个特殊的程度副词,它可以:
    a. 修饰形容词等:
    I’m not much good at singing. 我唱歌不太好。
     b. 修饰比较级:
    You sing much better than me. 你比我唱的好多了。
    Their house is much nicer than ours. 他们的房子比我们的好多了。

    疑问副词和连接副词:
    1)疑问副词:疑问副词用来引导特殊问句:
    how: How is your grandmother? 你奶奶身体好吗?
    where: Where does she come from? 她是哪儿人?
    when: When can you come? 你什么时候能来?
    why: Why was he so late? 他为什么来得这么晚?
    2)连接副词:连接副词意思和词形都和疑问副词一样,但都引导从句或与不定式连用:
    how: Do you know how to start this machine? 你知道这台机器怎样启动吗?
    where: I don’t know where he lives. 我不知道他住在哪儿。(引导宾语从句)
    when: Tell me when you’ll be ready. 告诉我你什么时候准备好。(引导宾语从句)
    why: That’s why I came round. 这就是我来的原因。(引导表语从句)

    一些其它类型的副词,如表示方向的副词:
    Let’s go inside. 咱们到里面去。
    Take two steps forward. 向前走两步。

  • 副词的位置:
    1、实义动词前,be动词、情态动词之后。
    I am also Bush.
    I can also do that.
    I also want to play that games.
    I get up early in the morning everyday. 我每天早早起床。
    He gave me a gift yesterday. 他昨天给了我一件礼物。
    She didn't drink water enough. 她喝的水不够。
    The train goes fast. 火车跑得快。
    We can go to this school freely. 我们可以免费到这家学校学习。
    They left a life hardly then. 当时他们的生活很艰难。
    He has a new hat on today. 他今天戴了一顶新帽子。
    I have seen this film twice with my friends. 这部电影我和朋友看过两次。

    2、副词修饰形容词,副词时,副词在前面,而被修饰的词在后面。
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