懂视:Be动词杂英语里有着十分重要的地位,需要牢牢掌握,下面我们一起看看这篇《动词be解析》。
Be动词一般现在时(一般现在时表示通常性、规律性、习惯性、真理性的状态或者动作发生有时间规律的一种状态)有三种形式,记住哦,只有三种形式。它们分别是:am,is,are.
陈述句:
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。
疑问句:
Is the man a science teacher?
Are Mary's new dresses colourful?
Have I been there before?
Is mother in the kitchen now?
否定句:
The man is not a science teacher.
The man isn't a science teacher.
They are not in the kitchen.
They aren't in the kitchen.
They're not in the kitchen.
时态中的助动词be:
Tony's maid is washing his new car.
The children are playing in the field.
Samuel was eating when I came in.
We have been living here since 1959.
被动语态中的助动词be
一般现在时:am/is/are+done
一般过去时:was/were+done
一般将来时:will+be+done
现在进行时:am/is/are+being+done
过去进行时:was/were+being+done
现在完成时:have/has+been+done
过去完成时:had+been+done
祈使句中的系动词be
Don't be silly!
Do be obedient!
Be careful!
Don't be a fool!
简单总结:
动词be分为系动词be和助动词be两种,系动词be是谓语的重要组成部分,助动词be则只起到形式的作用,由于主语和时态的要求,动词be要变成相应的形式。
公众号:英语语法教程
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