高中主语从句

精雕细琢 只为更优秀的你 学校地址 中山市石岐区兴中大厦二层 假日广场对面 民生银行楼上 咨询电话 0760 85955888 1 升高二英语名词性从句之主语从句升高二英语名词性从句之主语从句 姓名 姓名 年级 年级 教师 教师 刘琳刘琳 学习过程学习过程 一 主语从句的概念与类型 主语从句在复合句中作主句的主语 引导主语从句的词有从属连词 that whether 以及连接代词 who what which whoever whatever whichever 和连接副词 when where why how 等 一 从属连词 一 从属连词 that whether 等等 that 引导主语从句只起引导作用 本身无实际意义 在主语从句中不充当任何成分 但不能省略 That he will win is certain 他肯定会赢 Whether he ll come here isn t clear 他是否会来这里还不清楚 注意注意 由 that 引导的主语从句有时为了使句子结构平衡 避免 头重脚轻 常用 it 作形式主语 而把从 句放在后面 例如 1 That he will refuse this piece of advice is impossible 2 That they should like each other is natural 这样就构成了下面一些常用句型 1 It is n 从句从句 It is a pity shame that 遗憾的是 It is a surprise that 令人惊奇的是 It is a fact that 是事实 It is common knowledge that 是常识 很遗憾 we lost the match 这是事实 he cheated in the exam 2 It is adj 从句从句 It s certain that 肯定 It is possible that 很可能 It is unlikely that 不可能 It is obvious that 很明显 It is necessary important natural that should do 很可能 she will come back tomorrow 很明显 this measure is effective 3 It 不及物动词不及物动词 从句从句 It happened that 碰巧 It occurred to me that 我突然想起 刚好 I came into the office at that time 我突然想起 I forget to sent the letter 精雕细琢 只为更优秀的你 学校地址 中山市石岐区兴中大厦二层 假日广场对面 民生银行楼上 咨询电话 0760 85955888 2 4 It be 过去分词过去分词 从句从句 It is said that 据说 It is known to all that 众所周知 It is reported that 据报道 It is believed that 人们相信 It is suggested that should do 建议 It must be admitted that 必须承认 It cannot be denied that 不可否认 It must be pointed out that 需指出的是 据报道 20 people were killed in the accident 建议 we should eat more vegetable and do more exercise 二 二 连接代词连接代词 who what which whatever whichever whoever Who whom which what 可以和可以和 ever 构成合成词 和构成合成词 和 what 一样引导从句 一样引导从句 ever 起到强调作用 起到强调作用 它们在句子中担任主干成分 并用陈述句形式它们在句子中担任主干成分 并用陈述句形式 What many scientists believe is that the earth is round Who will take part in the meeting has not been decided Whoever breaks the law will be punished Whatever was said here must be kept secret 三 三 连接副词连接副词 when where how why 等 等 Why they suddenly disappeared still remains a mystery When they will leave is not decided How we will paint the house has not been decided 注意注意 1 主语从句在句首时 必须由连接词引导 不能省略这些连接词 主语从句在句首时 必须由连接词引导 不能省略这些连接词 误 They should like each other is natural 正 That they should like each other is natural 2 whether 引导主语从句 引导主语从句 if 不可不可 误 If Mary really heard him is really doubtful 正 Whether Mary really heard him is really doubtful Complete the sentences using what whether where when who why how or that 1 is needed for success is your hard work 2 they will arrive has been told to the teacher 2 we will go tomorrow hasn t been decided yet 3 can join in the sport meet is decided by the teacher 4 it will rain or not is not clear Conclusion 主语从句作主语时 谓语动词一般用单数形式 精雕细琢 只为更优秀的你 学校地址 中山市石岐区兴中大厦二层 假日广场对面 民生银行楼上 咨询电话 0760 85955888 3 四 主语从句的规律 四 主语从句的规律 找出下列句子中的错误 并总结规律例找出下列句子中的错误 并总结规律例 规律一规律一 主语从句一律用陈述语序 即主语在前 谓语在后 1 When will he come is not known 正 When he will come is not known 规律二规律二 连词 that 在从句中无实际意义 但不能省略 例 2 He will not come to the meeting this evening is true 正 That he will not come to the meeting this evening is true 规律三规律三 whether 可以引导主语从句 放在句首 但 if 不能 例 3 If the meeting will be put off has not been decided yet 正 Whether the meeting will be put off has not been decided yet 规律四规律四 主语从句中的连词不能重叠使用 例 4 That whether he will help others is a fact 正 That he will help others is a fact 规律五规律五 含主语从句的主句谓语动词多用 单数第三人称形式 例 5 When he will come are a puzzle 正 When he will come is a puzzle 规律六规律六 what 引导的主语从句 可根据表语决定主句动词的单复数形式 1 What he needs is that book 2 What he needs are some books 规律七规律七 主语从句为了避免头重脚轻现象 用 it 做形式主语 而把从句放在后面 That the earth turns around the sun is known to all It is known to all that the earth turns around the sun 找出错误 并给出理由 找出错误 并给出理由 1 Where shall we spend the holiday isn t decided 2 You have made a mistake is a fact 3 If the policeman will come is not certain 4 That is certain that we can win 精雕细琢 只为更优秀的你 学校地址 中山市石岐区兴中大厦二层 假日广场对面 民生银行楼上 咨询电话 0760 85955888 4 5 It is ordered we should leave at once 6 Where he comes from are a mystery 7 What whether he likes the job is not clear 8 Who he is and where he is from is important 9 What he saw is the stars in the sky 1 he made an important speech at the meeting was true A That B Why C What D How 2 we ll go camping tomorrow depends on the weather A If B Whether C That D Where 3 It worried her a bit her hair was turning gray A whether B that C what D when 4 What I say and think none of your business A is B are C has D have 请用恰当的主语从句连词填空请用恰当的主语从句连词填空 What it that whether whoever 1 you don t like him is none of my business 2 he said at the meeting astonished everybody present 3 the 2000 Olympic Games will be held in Beijing is not known yet 4 we ll go camping tomorrow depends on the weather 5 leaves the room last ought to turn off the lights 用用 whether if 填空填空 1 The question is the film is interesting 2 we shall attend the meeting hasn t been decided yet Correct or not If we will have a meeting hasn t been decided yet Whether we will have a meeting hasn t been decided yet Pay attention 放在名词性从句句首 表示 是否 只能用 whether 不能用 if That she wants to know is when the party will be held What she wants to know is when the party will be held Pay attention 此主语从句缺少成分 宾语 故用作成分的 what 来引导 而不用 that 精雕细琢 只为更优秀的你 学校地址 中山市石岐区兴中大厦二层 假日广场对面 民生银行楼上 咨询电话 0760 85955888 5 He will give up his job surprises all of us That he will give up his job surprises all of us Pay attention 由 that 引导的主语从句放在句首 that 不能省略 1 he made an important speech at the meeting was true A That B Why C What D How 2 we ll go camping tomorrow depends on the weather A If B Whether C That D Where 3 is known to us all that America is a developed country A Which B As C What D It 4 It s known to us all a form of energy A water is B that water is C is water D that water to 5 It worried her a bit her hair was turning gray A whether B that C what D when 6 What I say and think none of your business A is B are C has D have 五 语气五 语气 在 It is necessary natural important strange that clause 这类句型里 that 所引导的主语从句中 谓语动词用 should 原形 表虚似语气 例如 It is necessary that the problem should be settled at once 这个问题必须马上解决 It s strange that he should have gone away without telling us 他竟然没向我们说一声就走了 真是奇怪 巩固练习 15 It is necessary that a college student at least a foreign language A masters B should master C mastered D will master 六 以六 以 it 作形式主语的主语从句与强调句型的区别作形式主语的主语从句与强调句型的区别 It be adj n that clause 与强调句型均有 It be that 之类的语言标志 但不同的是 前者中的 that 从句是主语从句 若删掉其中的 It be 和 that 则剩余部分不论结构还是语意都不 能成为一个句子 但若将后者中的 It be 和 that 去掉 则剩余部分的结构和语意仍能构成一个完整的句 子 强调句型译为汉语时可加上 正是 或 就是 之类的字眼 而主语从句则不可以 请比较 下面两个句子 It is surprising that Mary should have won first place 令人惊奇的是玛莉竟然获得了第一名 It is Mary that has won first place 正是玛莉得了第一名 精雕细琢 只为更优秀的你 学校地址 中山市石岐区兴中大厦二层 假日广场对面 民生银行楼上 咨询电话 0760 85955888 6 第一句话中的 It 是形式主语 that 引导的是主语从句 句中的 It is 和 that 无法删除 若删除句子就不成 立 第二句是强调句型 其中的 It is 和 that 可去掉 因为没有 It is 和 that 句子仍很通顺 巩固练习 1 Does matter if he can t finish the job on time A this B that C he D it 2 It worried her a bit her hair was turning grey A which B that C if D for is a fact that English is being accepted as an international language A There B This C That D It 4 what they told me really true A Has B Is C Does D Have 5 It matters little a man dies but matters much is he lives A how what how B how it how C why it why D that what that 6 she couldn t understand was fewer and fewer students showed interest in her lessons A What why B That what C What because D Why that 7 It is pretty well understood controls the flow of ca