6动词的基本概念.ppt

1、动 词 的 基 本 概 念,一、谓语动词是单句的重要标志，在没有 并列连词连接的情况下，一个单句只能有 一个谓语动词。如果要出现其它动词，则 有以下几种方式：, 用并列连词 (and, or, but) 或并列的标点符号： 分号、冒号、破折号(;:) 将动词或句子并列: I got on a bus and headed for the next stop of my life. 用关系词 (which, that, who, whom, when, where, why等) 或从属连词 (that, what, who, whom, which, when, where, how, why等

2、) 将两个句子 变为主从复合句: I got on a bus which started for the next stop of my life. 将除谓语动词以外的其它动词变为非谓语 动词 (to do; doing; done) : It got on a bus starting for the next stop of my life.,二、系动词的功能是表明事物是怎样的 （系：是），故所有系动词在语法上都可 以用be动词代替，只是比be动词更具体 如： His first performance proved successful. (=His first performance

3、 was successful.) How it worked remained a mystery. (=How it worked was a mystery.),三、系动词、不及物动词没有被动语态， 所以没有被动的非谓语动词形式。 我从不羡慕属于别人的幸福。 I have never desired the happiness belonging to others. 他笑了，似乎对我的建议感到满意。 He smiled, seeming pleased with my suggestion.,四、瞬间动词可用于完成时态，但是不能 和表示一段时间的状语连用。 我想你见不着他了，他已经离开

4、办公室了。 I dont think you will meet him; he has left his office. 我想你见不着他了，他离开办公室很久了。 I dont think you will meet him; he has been away for a long time.,五、助动词(包括情态动词)的作用: (帮)助(谓语)动词，说明主语的人称，动作发生的时间，句子的语气等。 He has won the election. I did see him yesterday. Do you attend this school? He shall be responsibl

5、e for the damage. If I could do it, I would do it. Who do you suggest _ ask to give us a talk on energy conservation? A. I should B. should I B. I will D. will I,(人称、时间),（时间、语气）,（语气）,（语气）,(语气),六、情态动词、不定式符号to后只能接动词 原形，故表过去动作时需用have done。 他那天一定不在家。 He cant have been at home that day. 据说他以前拍过一部电影。 He is said to have made a film. 你刚才肯定在想别的事。 You must have been thinking abo