原因状语从句

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1、原因状语从句目录原因状语从句 用法 考题解析编辑本段原原因因状状语语从从句句一、引导原因状语 从句的从属连词 主要的有 because, as, since,for,seeing (that), now (that), considering (that),in that 等: The woolly shrank because it was washed badly. 毛衣因洗得不得 法而缩水。 I cant get to sleep because of the noise outside. 由于外面声 音嘈杂我睡不着。 Since As weve no money, we cant bu

2、y it. 由于我们没钱,我 们无法购买它。 Seeing that its raining, wed better stay indoors. 既然外边 在下雨,我们最好待在室内。 Now that you are here, youd better stay. 你既然来了,最好还 是留下吧(既来之,则安之)。 【注】除以上提到的大家比较熟悉的引导原因状语从句的从属连词外, when 有时也可引导原因状语从句 (when 表示“既然”) I wont tell you when you wont listen. 既然你不想听,我就不 告诉你了。 二、关于 notbecause 结构 该结构中

3、的否定词有时否定主句,有时否定从句,一般要根据句子的意 思作出正确或合乎逻辑的理解。若 not 否定主句,最好在 because 之前用逗 号,否则会引起歧义,如下句在没有特定上下文时就有两种解释: I didnt go because I was afraid. 我没有去是因为怕。 / 我不是 因为怕才去。 不过若 because 之前有 just 修饰,一般认为 not 是否定从句的: You shouldnt get angry just because some people speak ill of you. 你不要因为有人说你坏话而生气。 三、because 习惯上不与 so 连用

4、 汉语习惯上说“因为所以”,但英语习惯上却不能将 so 与 because 连用: 因为下雨,所以我们呆在家里。 正:Because it was raining, we stayed at home. / It was raining, so we stayed at home. 误:Because it was raining, so we stayed at home. 四、because 从句与 because of 短语的转换 Because 引导的原因状语从句有时可与 because of 短语转换, because of 后加的原因可以为好或坏 但最正规的还是 because H

5、e cant come because he is ill. / He cant come because of his illness. 他因病不能来。 I said nothing about it because his wife was there. / I said nothing about it because of his wifes being there. 因为他妻子在 那儿,我对此事只字未提。 比较:because, since, as 和 for 1) because 语势最强,表示不知道的原因用 because,即说话人认为 听话人不知道。因此 because 从句是

6、全句最重要的部分,通常被放置于主语 之后。 当原因是显而易见的或已为人们所知,就用 as 或 since。 I didnt go, because I was afraid. Since /As the weather is so bad, we have to delay our journey. 2) for 虽然表示不知道的原因,但因语气比 because 弱得多,是可 说可不说的话,只能位于主语之后,这时, for 是并列连词,如果不是因果 关系,而是对前面主语内容加以解释或推断时,只能用for。 He is absent today, because / for he is ill.

7、 He must be ill, for he is absent today. 编辑本段用用法法原因状语从句表原因, 以下逐一介绍中、高考中常见的原因状语从句 的引导词: 1. because 引导的原因状语从句一般放于主句之后, because 表示直 接原因, 语气最强, 最适合回答 why 引导的疑问句。例如: I do it because I like it. 我做这件事是因为我喜欢。 注意: “not . because”结构中的 not 否定的是 because 引导的整 个从句, 例如: The country is not strong because it is larg

8、e. 国 强不在大。 2. since 引导的原因状语从句一般放于主句之前表示已知的、 显然的 理由(通常被翻译成“既然”), 较为正式, 语气比 because 弱。例如: Since you are free today, you had better help me with my mathematics. 既然今天你休息, 你最好帮我补习数学。 注意: seeing (that), now (that), considering (that), in that 这几个词汇与 since 引导的原因状语从句意思相近, 都表示“既然”。 例如: Seeing (that) he refus

9、ed to help us, theres no reason that we should now help him. 他既然曾经拒绝帮助我们, 我们现在没有 理由要来帮助他。 / Now (that) you are grown up, you should not rely on your parents. 既然你长大了, 就不应该依靠你的父母了。 / Considering (that) everybody is here, lets begin our discussion. 既然大家都到了, 我们就开始讨论吧。 / In that he is ill, he feels unabl

10、e to do it. 因为有病, 他觉得做不了那件事。 3. as 引导原因状语从句时表示附带说明的 “双方已知的原因 ”, 语 气比 since 弱, 较为正式, 位置较为灵活(常放于主句之前 )。例如: As it is raining, youd better take a taxi. 既然在下雨, 你最好乘出 租汽车。/ As you are tired, you had better rest. 既然累了, 你最好休息一下。/ I went to bed early, as I was exhausted. 我睡得早, 因为我筋疲力尽了。 4. for 引导的原因状语从句并不说明主

11、句行为发生的直接原因, 只提 供一些辅助性的补充说明, for 引导的原因状语从句只能放于主句之后并且 必须用逗号将其与主句隔开。例如: He could not have seen me, for I was not there. 他不可能见过我, 因为我不在那里。 编辑本段考考题题解解析析考题 1 _ youve got a chance, you might as well make full use of it. (1999) A. Now that B. After C. Although D. As soon as 答案 A 解析 主句与从句之间存在因果关系, 且“youve go

12、t a chance”表示一个显而易见的原因, 因此应选用表原因的 now that。 考题 2 He found it increasingly difficult to read, _ his eyesight was beginning to fail. (2006 北京) A. and B. for C. but D. or 答案 B 解析 “his eyesight was beginning to fail”是“he found it increasingly difficult to read”的原因, 因此本题应选用可以表示原 因的连词 for 引导原因状语从句。 考题 3 A man cannot smile like a child, _ a child smiles with his eyes, while a man smiles with his lips alone. (2006 湖南) A. so B. but C. and D. for 答案 D 解析 下划线处之后的句子补充说明 “a man cannot smile like a child”的原因, 应选用 for 表原因。

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