but详细用法精品讲解(2014年4月21日).ppt
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陈才英语语言教育培训中心 but 详细用法精品讲解 (2014年 4月21日) but 详细用法精品讲解 but 一词既可作连词、介词、副词用,又有一些习惯搭配和固定用法,现对其用法作以下归纳。 一、用作连词 1. 用作等立连词,使其前后的词、短语、分句相互对照,作“但是,然而,可是”解。例如: She is young but very experienced. 她虽然年轻但经验丰富。 but 详细用法精品讲解 They are tired but happy. I was going to write, but I lost your address. Not one but two! but 详细用法精品讲解 He is not good at maths, but he is good at English. He scarcely knows French, but he speaks English perfectly. but 详细用法精品讲解 2. 用于表示歉意的话语之后,表示谢绝或不赞成。例如: I‘m sorry, but I disagree with you. 对不起,我不同意你的意见。 Im sorry, but I cant come. Excuse me, but can you tell me the way to the library? but 详细用法精品讲解 3. 用于两个并列的分句之间,与前面的否定词形成对比,作“无……而不……”解。例如: It never rains but it pours. 不雨则已,一雨倾盆。 I never go past that house but I think of my miserable life in the old society. 我走过那所房子时,没有一次不想起我在旧社会所过的悲惨生活。 but 详细用法精品讲解 一、but用法连词,表示让步关系,意思是“除非,要不是”,常与that一起构成but that, 相当于if...not。 例如:I would have failed but that your helped me. 要不是你们帮助我,我就会失败。 but 详细用法精品讲解 二、but用作连词,放在否定词或疑问词之后,作从属关系,表示否定意义,可相不于that not. 例如: Never a month passed but she writes to her parents. 她没有一个有不给她双亲写信。 三、but用于否定词加doubt,question,deny等到之后,没有实在意义,只相当于关系连词that. 例如: Theres no doubt but he is a thief. 毫无疑问,他是一个贼。 but 详细用法精品讲解 有时 but that 从句出现于含有 not 的主句之后,意思是:“只有…… 才 ……”。例如:He will not find the answer but that he studies it thoroughly. He will not come but that he is asked. but 详细用法精品讲解 二、用作介词 1. 与 no , nobody , nothing , none , who 等词连用,作“除……之外”解,用来排除同类中的一分子,或从整体中除去一部分。例如: Nobody knew her but me. 除我以外,没有人认识她。 Nothing but disaster would come from such a plan. 这个计划只能带来灾难,别无益处。 but 详细用法精品讲解 四、but用作介词,表示“除了”意义,相当于besides,except. 例如:No one knows him but she. 除了她,没有人认识她。 Everyone lost fainth in the plan but she. No one found the answer but she. but 详细用法精品讲解 2. but 前面有 do 的某种形式时, but 后面的动词不定式要省略 to ;其前没有 do 的某种形式时, but 后面的不定式要带 to 。例如: We had no choice but to wait. 除了等待,我们别无选择。 He did nothing all day long but watch TV.一整天,他除了看电视,别无他事可做。 but 详细用法精品讲解 3. 与 last ,
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