标题 | was ing是什么时态 |
范文 | be动词用法: 当做主动词时,“be”在性质上属于接系动词(The Linking Verb), 后面要有名词、形容词、地方副词或短语作补足语(The Complement)。例如: The man is a science teacher. 这个男子是一位科学教师。 Mary's new dresses are colourful. 玛丽的新衣服色彩鲜艳。 I have been there before. 我以前去过那里。 My mother is in the kitchen now. 我妈妈现在在厨房里。 这四个都是陈述句,可以变成疑问句,方法简单,把主语和“be”或助动词对换位置即可: Is the man a science teacher? Are Mary's new dresses colourful? Have I been there before? Is mother in the kitchen now? 当“be”要在祈使句中出现时,陈述句可借助助动词“do”,否定句必须在前加上助动词“don't”,如: Don't be silly! Do be obedient! Be careful! Don't be a fool! “Be”有两种缩写法,如下: He's not...../He isn't.... You're not...../You aren't... 但“am + not”的缩写法只有一个: I'm not. 上一篇:cloud的形容词用英语怎么写 下一篇:211大学是什么意思c |
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