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成人高考:句子成分和从句

时间:2023-03-26 15:39:22 成人高考 我要投稿
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成人高考:句子成分和从句

  一、句子成分
  (一)句子成分的定义:构成句子的各个部分叫做句子成分。句子成分有主要成分和次要成分;主要成分有主语和谓语;次要成分有表语、宾语、定语、状语、补足语和同位语。
  (二)主语:主语是一个句子所叙述的主体,一般位于句首。但在there be结构、疑问句(当主语不疑问词时)和倒装句中,主语位于谓语、助动词或情态动词后面。主语可由名词、代词、数词、不定式、动名词、名词化的形容词和主语从句等表示。例如:
  During the 1990s, American country music has become more and more popular.(名词)
  We often speak English in class.(代词)
  One-third of the students in this class are girls.(数词)
  To swim in the river is a great pleasure.(不定式)
  Smoking does harm to the health.(动名词)
  The rich should help the poor.(名词化的形容词)
  When we are going to have an English test has not been decided.(主语从句)
  It is necessary to master a foreign language.(it作形式主语,真正的主语为后面的不定式)
  (三)谓语:谓语说明主语所做的动作或具有的特征和状态。动词在句中作谓语,一般放在主语之后。谓语的构成如下:
  1、简单谓语:由一个动词或动词短语构成。如:He practices running every morning.
  2、复合谓语:(1)由情态动词或其他助动词加动词原形构成。如:You may keep the book for two weeks. He has caught a bad cold. (2)由系动词加表语构成。如:We are students.
  (四)表语:表语用以说明主语的身份、特征和状态,它一般位于系动词(如be, become, get, look, grow, turn, seem等)之后。表语一般由名词、代词、形容词、分词、数词、不定式、动名词、介词短语、副词及表语从句表示。例如:
  Our teacher of English is an American.(名词)
  Is it yours?(代词)
  The weather has turned cold.(形容词)
  The speech is exciting.(分词)
  Three times seven is twenty one?(数词)
  (五)宾语object:宾语表示及物动词的对象或内容。介词后面的名词或代词叫做介词宾语。宾语通常由名词、代词、数词或与之相当的结构但任,位置在及物动词或介词之后。
  如:Would you mind coming earlier tomorrow? 你明天早点来行吗?(动名词)
  (六)补语complement:补语用于补充说明主语或宾语。补语通常由形容词、名词或其他相当的结构担任。补语分为宾语补足语和主语补足语。
  宾语补足语:
  如:The doctor advised her to stay in bed for a week.医生建议她卧床休息一周。(动词不定式)
  They saw her walking into the bookstore.他们看见她进了书店了。(分词)
  You should put your books in order.你应该把书摆整齐。(介词短语)
  主语补足语:含有宾语补足语的句子改为被动语态时,原宾语和宾语补足语变为主语和主语补足语。
  如:we found him working in the office.我们发现他正在办公室工作。
  (七)定语attributive:定语用于限定或修饰名词或代词,通常由形容词或与之相当的结构担任。单词作定语一般放在被修饰语的前面,短语或从句作定语放在被修饰语的后面。
  如:The girl playing the violin is a freshman.拉小提琴的那个女孩是一年级学生。(分词短语)
  (八)状语adverbial:状语用于修饰动词、形容词、副词或整个句子。状语通常由副词或与之相当的结构担任。
  He is leaving for Shanghai the day after tomorrow.他后天动身去上海。(名词短语)
  (九)同位语appositive:同位语位于名词或名词性短语之后,说明其内容。同位语通常由名词、名词性短语或从句担任。
  The future belongs to you young people.未来是属于你们年轻人的。(名词)
  2.英文句子构成:主语部分+谓语部分
  英语中的句子有长有短,有简有繁,表面上看,似乎千变万化,但是从本质上来说,都可以把英语中的完整的句子分为两部分。即主语部分和谓语部分。主语部分以代词、名词或名词短语来充当,来表明我们要陈述的对象。而在主语之后的动词及其后面的部分,都是用来说明主语做什么,或者描述主语的状况。这就是陈述的内容,即谓语部分。
  如:The moon rose slowly.月亮慢慢升起来了。
  主语部分 谓语部分
  He neither speaks English, nor understands it.他既不会讲英语,也听不懂英语。
  主语 谓语部分
  因此在写英文句子的时候,通常要有主语,还要写出谓语动词,既要有陈述对象,又要有陈述内容,这样才能表达一个完整的意思。
  3.五种基本句型
  1)主语+谓语动词(+状语)
  此句型特点:既然该句型中动词后面没有宾语,所以用于这个句型的动词应该是不及物动词。
  如:The sun rises and the sun sets.日升日落。
  The fire is burning.火在燃烧。
  The children are playing.小孩子正在玩耍。
  这种句型的谓语动词后往往带有状语:
  如:He works hard.他工作很勤奋。
  The sun sets in the west.太阳从西面落下。
  2)主语+系动词+表语
  所谓系动词,又叫连系动词。即这种动词并没有具体的动作,只是起连接主语和后边的成分的作用。
  如:He looks unhappy.他好像不高兴。
  Bread is the staff of life.民以食为天。
  Beauty is in the eye of the beholder.情人眼里出西施。
  注:在英语中,除了be动词以外,还有以下系动词:
  a) 表示主语的特征、状态的:look, sound, taste, smell, seem, appear, feel等
  如:The iron feels hot.这铁摸起来很烫
  The rose doesn’t smell much.这玫瑰花闻起来不是很香。
  b) 表示主语由一种状态转变为另一种状态的:become, grow, get, turn, go, fall, come等。(这些系动词和形容词连用,一般是句由固定的搭配关系)
  如:Our supplies of sugar and rice fell short.我们的糖、米供应不足。
  Hope your dreams will come true.希望你好梦成真。
  The leaf will turn yellow in autumn.树叶秋天会变成黄色。
  go hungry 挨饿 go sour变酸 go wrong出错
  fall asleep睡着 fall due到期
  c)表示主语保持某种状态的:continue, remain, stay, keep, hold, rest, prove等
  如:The weather continued fine for several days.那几天,天气一直晴朗。
  He held silent for the whole day.他一整天都沉默不语。
  He has fallen into the habit of doing morning exercises to stay healthy.为了保持身体健康,他养成了晨练的习惯。
  定语从句
  (一)定语从句一般由关系代词和关系副词引导
  1、关系代词:who, whom, whose, which, that, as
  2、关系副词:when, where, why
  关系代词和关系副词必须位于从句之首,主句先行词之后,起着连接先行词和从句的作用,    同时在从句中又充当句子成分。
  e.g. She is the girl who sings best of all.(关系代词who在从句中作主语)
  The comrade with whom I came knows French.(whom在从句中作介词with的宾语)
  3、关系代词和关系副词的用法:
  1)当先行词为人时用who 作主语,whom作宾语;
  2)当先行词为物或整个句子时用which ,可作主语或宾语;
  3)先行词为人、物时用that ,可作主语或宾语;
  4)whose用作定语,可指人或物;
  5)关系副词when(指时间,在定语从句中作时间状语,where(指地点,在定语从句中作地点状语),why(指原因,在定语从句中作原因状语)。
  (二)限制性定语从句与非限制性定语从句
  1、限制性定语从句:从句与主句关系密切,去掉从句,主句意义不完整,甚至不合逻辑。
  e.g. I was the only person in our office who was invited.(去掉定语从句,意思就不完整)
  2、非限制性定语从句:从句对先行词关系不密切,去掉定从句,意思仍然完整。形式上用逗号隔开,不能that用引导。
  e.g. Tom’s father, who is over sixty, still works hard day and night.(who引导非限制性定语从句,整个句子可分成两句来翻译)
  (三)使用定语从句时特别注意的几个问题
  1、that与which的区别。
  1)用that而不用 which的情况:
  ①先行词为不定代词all, anything, nothing, …;
  ②先行词有最高级修饰,有序数词修饰;
  ③先行词有only, very, any等词修饰;
  ④先行词既有人又有物时。
  e.g. There is nothing that can prevent him from doing it. 没有什么能阻止他不干那件事。
  The first place that they visited in Guilin was Elephant Trunk Hill. 在桂林他们所参观的第一个地方是象鼻山。
  This is the best film that I have ever seen. 这部电影是我看过的最好的一部。
  Mr Smith is the only foreigner that he knows. 史密斯先生是他认识的唯一的外国人。
  2)用which而不用 that的情况:
  ①引导非限制性定语从句;
  ②代表整个主句的意思;
  ③介词 + 关系代词。
  e.g. He had failed in the maths exam, which made his father very angry. 他数学考试没有及格,这使他的父亲很生气。
  This is the room in which my father lived last year. 这是父亲去年居住过的房子。
  3)as引导定语从句时的用法
  ①as引导限制性定语从句通常用于the same … as, such … as结构中。
  e.g. I want the same shirt as my friend’s. 我要一件跟我朋友一样的衬衫。
  Such machines as are used in our workshop are made in China. 我们车间使用的这种机器是中国制造的。
  ②as引导非限制性定语从句既可放在主句之前,也可放在主句之后,用来修饰整个句子。通常用下列句型:as is known to all, as is said, as is reported, as is announced, as we all know, as I expect 等。
  e.g. As I expected, he got the first place again in this mid-term examination. 正如我所预料的那样,他在这次期中考试中又获得了第一名。
  3)as 引导非限制性定语从句时与which的区别
  ①当主句和从句语义一致时,用as;反之,用which来引导非限制性定语从句。
  e.g. He made a long speech, as we expected.
  He made a long speech, which was unexpected.
  ②当非限制定语从句为否定时,常用which引导。
  e.g. Tom drinks a lot every day, which his wife doesn’t like at all.
  2. 关系代词在从句中作主语时,从句的谓语动词单数还是用复数应由先行词决定。
  e.g. The man who lives downstairs speaks English fluently. 住在楼下的那个人英语说得很流利。
  The students who are in Grade Three are going to climb the hill tomorrow.
  3.定语从句有时不直接紧靠先行词,中间由一个定语、状语或谓语隔开。
  e.g. There is an expression in his eyes that I can’t understand.
  4.引导定语从句的关系副词有时可以用“介词 + which”来代替。
  e.g. October 1, 1949 was the day on which ( = when ) the People’s Republic of China was founded.
  5.当定语从句中谓语动词是带介词或副词的固定短语动词时,短语动词的各个固定部分不要拆开。
  e.g. The sick man whom she is looking after is her father.
  6.介词在关系代词前,只能用which和whom,且不能省略;介词在句尾,关系代词可有which, that, whom, 口语中也可用who,且可省略。
  e.g. The man (whom/ who/ that) you were talking about has come to school.
  ★Is this factory ________ you visited last Friday?
  A.which
  B.where
  C.the one
  D.there
  句子的主语为this factory, this是定语,要填空的是表语,作表语的应该是名词、代词或形容词,所以C项是正确答案。
  ★--What do you think made Mary so upset?
  --____her new bicycle.
  A.As she lost
  B.Lost
  C.Losing
  D.Because of losing
  分析:答案是C。本题的考点为简单句:--her new bicycle made her so upset.命题者将该句略为省略句,将made Mary so upset在答语中省略但在问句中体现。经过分析不难发现,问题问的是“What”,“what”在句中为主语,回答也应该是该空格应填主语,应由动名词担当。
  ★The country life he was used to ______ greatly since 1992.
  (2005山东卷)
  A.change
  B.has changed
  C.changing
  D.have changed
  分析:答案是B。分析语境和句子结构可知,he was used to为定语从句,修饰先行词the country life。此空格应填谓语动词而不是be used to的宾语。Since 1992为现在完成时的标志,因此该空格应填has changed。考生易受he was used to的影响而误选C。
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