句型转换。1. I think it's polite to smoke in public places. (改为否定句) I ______ think it ______ polite to smoke in public places.2. When will they arrive -九年级英语

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变成间接引语,就成了:
He said he would come.
原来的will变成would,go变成了come.。过去式从原来的go变为came。

  • 基本助动词只有三个:
    be, do,have,他们没有词汇意义,只有语法作用,如协助构成进行体,完成体,被动态,否定句,疑问句等。
    例如:
    He is giving a lecture. 他在作报告
    He has made a plan. 他已经订了计划
    The small animals are kept in the cages. 小动物都关在笼子里。
    助动词协助主要动词完成以下功用:
    a. 表示时态,例如:
    He is singing. 他在唱歌。
    He has got married. 他已结婚。
    b. 表示语态,例如:
    He was sent to England. 他被派往英国。
    c. 构成疑问句,例如:
    Do you like college life? 你喜欢大学生活吗?
    Did you study English before you came here? 你来这儿之前学过英语吗?
    d. 与否定副词not合用,构成否定句,例如:
    I don't like him. 我不喜欢他。
    e. 加强语气,例如:
    Do come to the party tomorrow evening. 明天晚上一定来参加晚会。
    He did know that. 他的确知道那件事。

  • 考点名称:疑问代词

    • 疑问代词:
      疑问代词在句中起名词的作用,用来构成疑问句。常用的疑问代词有:   
      what, who, whose, whom, which, whatever, whichever, whoever, whomever   
      疑问代词在句中应位于谓语动词之前,没有词性和数的变化,除who之外也没有格的变化。 
      what, which, whose还可作限定词。
      Whose books are these on the desk?
      桌上的书是谁的?
      What was the directional flow of U. S. territorial expansion?
      美国的领土扩张是朝哪个方向的?
      What events led to most of the east of the Mississippi River becoming part of the United States?
      哪些事件使密西西比河以东的大部分土地归属于美国?
      疑问代词在句中起名词词组的作用,用来构成疑问句。疑问代词有下列几个:
      指 人: who, whom, whose
      指 物: what
      既可指人又可指物: which

    • 疑问代词说明:
      一、无论是做疑问代词还是限定词,which 和 what 所指的范围不同。what所指的范围是无限的,而which则指在一定的范围内,例如:
      Which girls do you like best?
      你喜欢哪几个姑娘?
      What girls do you like best?
      你喜欢什么样的姑娘?

      二、Whom是who的宾格,在书面语中,它作动词宾语或介词宾语,在口语中作宾语时,可用who代替,但在介词后只能用whom, 例如:
      Who(m) did you meet on the street?
      你在街上遇到了谁?(作动词宾语)
      Who(m) are you taking the book to?
      你要把这书带给谁?(作介词宾语,置句首)
      To whom did you speak on the campus?
      你在校园里和谁讲话了?(作介词宾语,置介词 后,不能用who取代。)

      三、疑问代词用于对介词宾语提问时,过去的文体中介词和疑问代词通常一起放在句首,现代英语中,疑问代词在句首,介词在句未,例如:
      For what do most people live and work?大部分人生活和工作的目的是什么?(旧文体)
      What are you looking for?你在找什么?(现代英语)

      四、疑问代词还可引导名词性从句,例如:
      I can't make out what he is driving at.
      我不知道他用意何在。
      Can you tell me whose is the blue shirt on the bed?
      你能告诉我床上的蓝衬衣是谁的吗?
      Much of what you say I agree with, but I cannot go all the way with you.
      你说的我大部分同意,但并不完全赞同。

    • 疑问代词用法:
      1. 疑问代词有who, whom, whose, which和what, 都是用来构成疑问句的:
      Who is calling? 谁打电话来?
      Whom do you want to speak to? 你想找谁接电话?
      作主语时用who,作宾语时用whom,在口语中用who作宾语时也不少:
      Who did you mean? 你指的是谁?
      Who are you talking about? 你们在讲谁?
      直接跟在介词后时只能用whom:
      With whom did you come? 你和谁一道来的?
      (口语中说“Who did you come with?时更多一些。)

      2. 其他三个疑问代词可用作:
      1)主语:
      What’s your address? 你的地址怎样写?
      Whose is better? 谁的好一些?
      Which of these is yours? 哪一本是你的?
      2)宾语:
      What do you mean? 你是什么意思?
      Which do you like better? 哪一个你更喜欢一些?
      Whose have you chosen? 你选了谁的?
      3)表语:
      What’s her name? 她叫什么名字?
      Whose is it? 这是谁的?
      4)定语(这样用时有些字典标作形容词):
      What time does the train leave? 这列火车什么时候离开?
      Which room shall we stay in? 我们住哪间房?
      Whose passport is this? 这是谁的护照?

    考点名称:关系副词

    • 关系副词:
      用于引出定语从句,且在句中用作状语。
      关系副词when表示时间,where表示地点,why表示原因。
      例如:Sunday is the day when very few people go to work.
                  That is the reason why he dislikes me. 
                  Do you know a shop where I can find sandals?

    • 关系副词用法:
      1.关系副词兼有副词与连接词两种作用,在不及物动词的连接中要求用关系副词。

      2.关系副词所引导的形容词子句用于修饰主要子句中的某一名词或代名词,被修饰的词称作先行词,关系副词要放在先行词之后。
      例如:关系副词when在定语从句中用作状语,表示时间,用以修饰表示时间的先行词。

      3.关系副词主要有三个,即when,where,why。此外that也可代替关系代词引导代词子句。

      4.关系副词=preposition(介词)+relative pronoun(关系代词)
      例如:where=in which,when=on which,why=for which
      这些关系副词在从句中做状语。
      Would you please tell me the way how I can get to the zoo?
      你能告诉我去动物园的路吗?(the way是先行词。)
      This is the place where(that) I first met her.
      这是我第一次见到她的地方。
      在口语中that可以充当关系副词,代替when,why,how,只有先行词是the place时,才可代替where。
      A:When should we start to work?
      B:The sooner (we start),the better (it will be).
      我们应该什么时候开始工作? 越早越好。
      the作关系副词是引导副词子句,句子结构一般为:The+比较级...+the+比较级...,第一个the是关系副词。

      5.time,day,year,place,house,reason,way等作先行词时可以被省略,其后的子句不再是形容词子句,而变成名词子句或副词子句。
      中文:这是他出生的地方。
      This is where he was born.
      where he was born是名词子句。
      This is the place where he was born.
      where he was born是形容词子句。
      中文:我将在第一次见到她的地方见她。
      I'll meet her at the place where I first met her.
      where I first met her是形容词子句。
      I'll meet her where I first met her.
      where I first met her是副词子句。

      6.关系副词有限定用法,指的是关系副词引导的形容词子句只修饰先行词。
      We were very happy in those days when we studied in school.
      我们在学校里上学的那些日子里很快乐。

      7.关系副词有补述用法,即关系副词引导的是对等子句而不是形容词子句,主要用于对主要子句中的不足之处加以补充,前面都要加逗点与主要子句分开。
      Tom got married the day before yesterday,when it was his birthday too.
      汤姆前天结婚了,那天也是他的生日。

      8.wherever,whenever,however是复合关系副词,表示"不论",引导一个修饰主要子句里的动词的副词子句,可加强语气或表示让步。
      Wherever he goes,he would bring an umbrella with him.
      不论他去那里,他都带着一把雨伞。

    • 定语从句中关系词省略的6种情形:
      关系词有时可以省略,但这只限于限制性定语从句中,在非限制性定语从句中,关系词则不可省略。
      一、关系代词作宾语时的省略
      当关系代词who, whom, which和that在定语从句中用作动词宾语或介词位于句末时的介词宾语时,可以省略。如:
      Is there anything (which) you wanted? 想要什么东西吗?
      Who is the man (that / who / whom) you were talking to? 刚才和你讲话的人是谁?

      二、关系代词作表语时的省略
      当关系代词that在定语从句中用作表语时,可以省略。如:
      China is not the country (that) it was. 中国已不是过去的中国了。(that作表语)

      三、关系代词作宾补时的省略
      当关系代词that在定语从句中用作宾语补足时,可以省略。如:
      I’m not the madman (that) you thought me. 我并不是你所认为的那个疯子。(that作宾语补语)

      四、关系副词when的省略
      用作时间状语的关系副词when通常不能省略,但有一种特殊情况,即用于day, year, time等少数几个词后时可以省略(也可换成that)。如:

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