谓语动词构成：I am =I’m working , she/he/it is = he’s等 working

, We/you/they are =We’re等working

(1) 表示说话时正在进行或发生的动作

Please don’t make so much noise, I’m writing a composition.

不要吵闹,我正在写作文.

Let’s set off, it isn’t raining now.咱们出发把,现在天不下雨了.

(2) 有时通过上下问可以判断出应采用何种时态

Its four o’clock in the afternoon, the children are playing football on the sports ground.现在是下午4点,孩子们在操场上踢足球.

(3) 表示现阶段正在进行而说话时不一定在进行的动作

We are working in a factory these days.这几天我们在一家工厂工作.

They are compiling a dictionary.他们在编一本词典.

(4) 在口语中表示主语计划将要做的动作

They are leaving for New York tomorrow.明天他们将要动身前往纽约.

(5) 现在进行时与always等副词连用时带有感情色彩

He’s always quarrelling with others.他老喜欢跟别人吵架.

She is constantly worrying about her son’s health. 她不停地为她儿子的健康担心着.

The boy is forever asking questions.那个男孩老是提问问题.

(6) 有的现在进行时句子和一般现在时同义。用现在进行时表示问者的关切心情

How are you feeling today? 你今天感觉如何?

I am looking forward to your next visit.我盼望你下次再来.

Why are you looking so sad? 为什么你看起来这么愁眉苦脸的样子呢?

(7) 有的动词用于现在进行时表示“逐渐”的含义

Our study is becoming more interesting. 我们的学习变得越来越有趣了.

The leaves are turning red. 树叶渐渐地变红了.

Wait a moment， I am finishing my supper. 等一会儿，我的晚饭就要吃完了.

(8) “be”动词的现在进行时。“be”动词用于现在进行时表示说话者认为是短暂的、和平常不一样的、甚至是伪装的.

He is being foolish. 他在装傻.

He is being honest. 他表现得特别老实.

I can’t understand why he is being so selfish.我不明白此时他为何如此自私.