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2022中考英语常见考点:原因状语从句

http://www.newdu.com 2021-12-20 中考网 佚名 参加讨论

    是用来说明引起主句这个结果的原因的从句,在初中阶段引导原因状语从句的从属连词主要的有because, as, since,for等。例如:
    1.I didnt go to school yesterday because I was ill.   我昨天没去上学,因为我生病了。
    2. Since everybody is h ere, lets begin our meeting.   既然大家都来了, 让我们开始开会吧.
    3. As you are in poor health, you should not stay up late.   既然你身体不好, 你就不该熬夜.
    4.I asked her to stay to tea, for I had something to tell her. 我请她留下来喝茶,因为我有事要告诉她.
    原因状语从句应注意的问题
    1、because , since , as , for,辨析
    1)because语势最强,用来说明人所不知的原因,回答why提出的问题。当原因是显而易见的或已为人们所知,就用as或 since。
    I did nt go, because I was afraid.
    Since /As the weather is so bad, we have to delay our journey.
    2)由because引导的从句如果放在句末,且前面有逗 号,则可以用for来代替。但如果不是说明直接原因,而是多种情况加以推断,就只能用for。例:
    He is absent today, becaus e / for he is ill.   He must be ill, for he is absent today.
    3) as和for的区别:通常情况下,as引导的从句在主句前,for引导的从句在主句后。例:   As the weather is cold, I stay at home.(同义句)   I stay at home, for the weather is cold.
    2、because习惯上不与so连用
    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:
    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 h ome. 因为下雨,所以我们呆在家里。
    3、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。
    He 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 th ere. 因为他妻子在那儿,我对此事只字未提。
    常见考法
    对于原因状语从句的考查,多以单选和完形填空的形式,从连词的意义角度让大家选择连词。
    典型例题:He fou nd it increasin gly difficult to read, ____ hi s eyesight was beginning to fail.
    A. and B. for C. but D. or
    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。
    答案: B
    误区提醒
    除了because , since , as , for这四个词的辨析外,对于because 从句与 because of短语的区分也是难点之一。Because引导的原因状语从句有时可与because of 短语转换,because of后跟的是短 语 ,because后跟的是句子。
    典型例题:He didnt go to work the heav y rain.
    A .because B.because of C.so D.since
    解析:题干的意思是 由于那场大雨,他没有去上班 ,the heavy rain.表示原因,排除C; since 和 because 表示原因,后面跟的是从句,也就是说必须是一个完整的句子,本题中the heavy rain没有主语和谓语,.只是一个短语,所以排除A和C;because of表示由于,后跟名词、代词或短语。
    答案:B
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