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對主句補充說明理由或推斷原因?!纠}2】【題干】 He found it increasingly difficult to read, ____ his eyesight was beginning to fail. 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, 因此本題應選用可以表示原因的連詞for引導原因狀語從句。such that本身是錯誤短語,because 表示原因,even though是“盡管”的意思,不符合題意?! n order that與in order to的區(qū)別: in order that+從句 in order to+動詞原形( in order to后面加的那個不叫目的狀語從句,叫目的狀語) 例如: He got up early in order to take the first bus. = He got up early in order that he could take the first bus.(他起床很早是為了趕上第一班公共汽車) 目的狀語從句的一個特點:由于目的都是未來的行為,所以從句中一般用表示未來可能性時態(tài),比如上面句中的could。唯恐), for fear that(生怕。 A .because the heavy rain. D. or 解析: “his eyesight was beginning to fail”是“he found it increasingly difficult to read”的原因, 因此本題應選用可以表示原因的連詞for引導原因狀語從句。 He is absent today, because / for he is ill. He must be ill, for he is absent today. 3) as和for的區(qū)別:通常情況下,as引導的從句在主句前,for引導的從句在主句后。原因狀語從句應注意的問題狀語從句一般由連詞(從屬連詞)引導,也可以由詞組引起。從句位于句首或句中時通常用逗號與主句隔開,位于句尾時可以不用逗號隔開。 because , since , as , for,辨析 1)because語勢最強,用來說明人所不知的原因,回答why提出的問題。例: As the weather is cold, I stay at home.(同義句) I stay at home, for the weather is cold.答案: B誤區(qū)提醒 除了because , since , as , for這四個詞的辨析外,對于because 從句與 because of短語的區(qū)分也是難點之一。 解析:題干的意思是“ 由于那場大雨,他沒有去上班”,the heavy ,排除C; since和because 表示原因,后面跟的是從句,也就是說必須是一個完整的句子,本題中the heavy rain沒有主語和謂語,.只是一個短語,所以排除A和C;because of表示“由于以免)等詞引導。當然還可以用will,would,can,等 ?! 〈鸢福築 誤區(qū)提醒 如何區(qū)別目的狀語從句中的so that與結果狀語從句中的so that的用法,這是我們需要注意的?!纠}3】【題干】 A man cannot smile like a child, ____ a child smiles with his eyes, while a man