These dinosaur eggs ________ in Liaoning in 1990. [ ]A. were found B. found C. are found D. was found -九年级英语

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(5)表示过去一段时间内经常或反复的动作。常与always,never等连用。
Mrs. Peter always carried an umbrella.彼得太太过去老是带着一把伞。
(只是说明她过去的动作,不表明她现在是否常带着伞。)
比较:
Mrs. Peter always carries an umbrella.彼得太太老是带着伞。
(说明这是她的习惯,表明她现在仍然还习惯总带着一把伞)
Mrs. Peter is always carrying an umbrella.彼得太太 总是带着一把伞。
(表示说话者对这一动作或行为厌烦)
I never drank wine.我以前从不喝酒。
(不涉及到现在,不说明现在是否喝酒)

(6)如果强调已经终止的习惯时要用 used to do(过去常常做,而现在不那样做了)
He used to drink alcohol.他过去喝酒。
(意味着他现在不喝酒了。喝酒这个动作终止了)
I used to take a walk in the morning.我过去是在早晨散步。
(意味着现在不在早晨散步了)
比较:
I took a walk in the morning.我曾经在早晨散过步。
(只是说明过去这一动作)

(7)有些句子,虽然没有表示过去确定时间的状语,但实际上是指过去发生的动作或存在的状态的话,也要用过去时。
I didn''t know you were in Paris.我不知道你在巴黎。
(因为在说话时,我已经知道你在巴黎了。这句话指的是说话之前,所以只能用过去时表示。实际上,这句话暗指:But now I know you are here.)
I thought you were ill.我以为你病了呢。
(这句话应是在说话之前,我以为你病了。但是现在我知道你没病)

  • 一般过去时三变技巧:
    一变:肯定句变为否定句
    技巧1.当句中含有情态动词或助动词could,would,should等时,可直接在其后面加not构成否定句。例如:
    I could get you a concert ticket. → I could not / couldn't get you a concert ticket.
    技巧2.当句中含有系动词was,were 时,可直接在其后加not构成否定句。例如:
    I was on the Internet when you called me. → I was not / wasn't on the Internet when you called me.
    技巧3.当句中谓语是除情态动词、助动词、系动词was, were以外的动词时,在该动词之前加did not / didn't,动词还原,构成否定句。例如:
    The famous singer sang some Chinese songs. → The famous singer did not / didn't sing any Chinese songs.

    二变:陈述句变为一般疑问句
    技巧1.移动词语的位置。将was,were, could,would,should等移到句首。例如:
    He could pack his things himself. → Could he pack his things himself?
    技巧2.添加助动词did。谓语是除情态动词、助动词、系动词was, were以外的动词时,在主语之前加did,动词还原。例如:
    Mr Li looked very old. → Did Mr Li look very old?

    三变:陈述句变为特殊疑问句
    技巧1.确定疑问词:人who / whom,物what,地点where,时间when / what time,原因why,频率how often,长度how long,距离how far等等。例如:
    They gave the concert last night. → When did they give the concert?
    技巧2.辨认结构形式:疑问词+情态动词/助动词/ was / were / did +主语+...? 例如:
    The accident happened near the station. → Where did the accident happen?

  • 考点名称:被动语态

    • 语态:
      是动词的一种形式,它表示主语和谓语的关系。
      语态有两种:主动语态和被动语态。
      如果主语是动作的执行者,或者是说动作是由主语完成的,要用主动语态;
      如果主语是动作的承受者,或者是说动作不是由主语而是由其他人完成的,则用被动语态。

    • 被动语态的构成:
      被动语态的基本结构:
      主语+be +过去分词(+by+动作的发出者)
      ① 一般现在时:am/is/are+过去分词
      如:Trees are planted every year.
      ② 现在进行时 am/is/are+ being +过去分词
      如:The road is being repaired. 
      ③ 现在完成时 have/has + been +过去分词
      如:The work has been finished.
      ④ 一般过去时 was/were + 过去分词
      如:The story was told by him.
      Many birds were killed last year.
      ⑤过去进行时 was/were+ being + 过去分词
      如: The new house was being painted when I got home.
      ⑥过去完成时 had +been+ 过去分词
      如: He told me that the work had been finished.
      ⑦一般将来时  will +be + 过去分词
      如:The problem will be discussed tomorrow.
      ⑧ 过去将来时 would/should +be +过去分词
      如: He said that the Christmas tree would be put up soon.
      ⑨情态动词的被动语态
      情态动词+ be +过去分词    
      如:The problem must be solved soon.
      Children should be taught to love animals.

    • 被动语态使用注意:
      1. 不及物动词无被动语态。 如:happen, break down, come out......
      What will happen in 100 years.
      The dinosaurs disappeared about 65 million years ago.
      2. 有些动词用主动形式表示被动意义。 如: write, sell, ride.....
      This pen writes well.
      This new book sells well.
      3. 感官动词或使役动词使用省略to的动词不定式,主动语态中不带“to”,但变为被动语态时,须加上“to”。
      例:make somebody do something→somebody+ be +made to do something
      see somebody do something→somebody +be +seen to do something
      A girl saw my wallet drop when she passed by.→My wallet was seen to drop by a girl when she passed by.
      The boss made the little boy do heavy work.→The little boy was made to do heavy work by the boss.
      4. 如果是接双宾语的动词改为被动语态时,直接宾语(物)作主语,那么动词后要用介词,这个介词是由与其搭配的动词决定。
      He gave me a book.→A book was given to me by him.
      He showed me a ticket.→A ticket was shown to me by him.
      My father bought me a new bike. →A new bike was bought for me by my father.
      5. 一些动词短语用于被动语态时,动词短语应当看作一个整体,而不能丢掉其中的介词或副词。
      We can’t laugh at him. →He can’t be laughed at by us.
      He listens to the radio every day. →The radio is listened to by him every day.
      The nurse is taking care of the sick man. →The sick man is being taken care of by the nurse.
      构成be+done.

    • 主动句变为被动句所遵循的4个步骤:
      ①把原主动句中的宾语变为被动句的主语
      ②把动词变为被动形式即be +过去分词,并注意其人称和数随主语的变化,而动词的时态则保持不变。
      ③原主动句的主语如需要则放在by后面以它的宾格形式出现(注代词的宾格),如不需要则可省略。
      ④其它的成分(定语、状语)不变。

      不用于被动语态的情形:
      ①不及物动词没有被动语态
      这类动词有take place, happen, come about, break out, appear, disappear, last,  arise等。
      例如:A fire broke out during the night.
      ②某些静态动词不用于被动语态
      这类动词有have, lack, fit, hold, suit, resemble等。 
      例如:My shoes do not fit me.
      ③宾语为相互代词和反身代词时不用于被动语态
      例如:We should help each other.

      关于主动形式表示被动意义:
      ①系动词(如look, sound, smell, feel, taste, prove等)要用主动表被动,因为系动词为不及物动词,它们没有被动语态形式。
      例如:The building looks very beautiful.
      ②当open, close, shut, lock, move, read, wash, clean, cook, cut, wear, carry 等用作不及物动词且表示主语的某种属性时,通常用主动形式表示被动意义。
      例如:The book sells well.
      ③有的动词本身含有被动意味,通常用主动形式来表示被动含义。
      例如:Her eyes filled with tears.
      ④不定式to blame, to let用作表语时,通常要用主动表被动。
      例如:Who is to blame?
      ⑤某些“be+形容词+to do”结构中的不定式通常要用主动形式表示被动意义。
      例如:The book is difficult to understand.
      ⑥不定式用于某些动词(如have, have got, get, want, need等)的宾语后作定语时,如果不定式的逻辑主语就是句子的主语,通常用主动形式表示被动意义。
      例如:Do you have time to help us?
      ⑦在too...to do sth.和...enough to do sth. 这两个结构中,若主语与其后不定式为to do sth.被动关系,则该不定式通常用主动形式表示被动意义(有时也可直接用 被动式)。
      例如:The writing is too faint to read.
      ⑧be worth后的动名词要用主动表被动。
      例如:This movie is worth seeing.
      ⑨在need, want, require等少数表示“需要”的动词后的动名词用主动形式表示被动意义。
      例如:The house needs cleaning.

      表示“据说”的三类被动句型:
      ①It is said that...句式
      例如:It is said that thirteen is an unlucky number.
      ②There is said that...句式 
      例如:There is said to be plenty of oil off our coast.
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