高中英语表语从.docVIP

高一英语语法知识（5） 表语从句（The Predicative Clause） 一、表语从句的定义：　　 表语从句就是用一个句子作为表语，放在连系动词之后，充当复合句中的表语，用来说明主语是什么或者怎么样。　 The problem is puzzling.语 连系动词 形容词作表语 The problem is when we can get a pay rise. 主语 连系动词 一个句子作表语---表语从句 What I want to say is that I am tired. 三、表语从句的用法 1.可接表语从句的连系动词有: 1). 最常用连系动词：be(am; is/was; are/were)。一般在句子中译成：…” China is no longer what she used to be. 2). 表变化的系动词：get; turn; go; fall; become; grow; come; run。：在英语中，系动词一般只有一般现在时和一般过去时两种时态变化形式，没有其他时态变化形式。但表变化的这类系动词除外，它们有各种时态变化。  It is becoming colder and colder. The food has gone bad.  此处还需注意的是become和turn后接表职业的名词时冠词的有无：  Two years later, he became a teacher.  但Two years later, he turned teacher.  另外，go表变化时一般指事情向消极、不好的方面转化。 3. 所谓“感官动词”:look; sound; taste; smell; feel一般它们在句子中译成：…起来；…上去。此类系动词为高考高频词。The food tasted good. 食物尝起来很香。 He looked sadly at the picture. / She looked sad after hearing the news. Tom tasted the food and it tasted good. 4). 表状态的系动词：keep; stay; remain; 一般在句子中译成：依然是；保持  She remains loyal to her father despite his cruelty towards her. ?What a lovely day today! I love fine weather and I hope it will stay fine for some days.Much remains to be done. 5). 表像系动词：seem; appear。一般在句子中译成：看起来像、似乎、好像。这两个动词有一个共同的特点，即如果要表达时态的变化，需要后接不定来完成。  He seemed to have caught cold. When Father came in, Tom seemed to be eating something. 另外此处一句型转换也要牢记： It seemed that he had caught cold. When Father came in, it seemed that Tom was eating something. 6). 终止系动词：prove; turn out。一般在句子中译成：证实、证明、结果为…He proved (to be) right. / The experiment turned out successful. 2.引导表语从句的关联词的种类： 1)从属连词that , that在表语从句中不充当任何句子成分，也没有任何意义。 The trouble is that I have lost his address. 2)从属连词whether, as, as if /as though引导的表语从句，有自己的含义，但在从句中并不充当语法成分。 He looked just as he had looked ten years before. The question is whether they will be able to help us. It looked as if it was going to rain. 注：从属连词if一般不用来引导表语从句，但as if却可引导表语从句。 All this was over twenty years ago, but it’s as if it was only yesterday. 3)because, why引导的表语从句，有自己