謂語動詞構成：I am =I’m working , she/he/it is = he’s等 working, We/you/they are =We’re等working

(1) 表示說話時正在進行或發(fā)生的動作

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

不要吵鬧,我正在寫作文.

Let’s set off, it isn’t raining now.咱們出發(fā)把,現(xiàn)在天不下雨了.

(2) 有時通過上下問可以判斷出應采用何種時態(tài)

Its four o’clock in the afternoon, the children are playing football on the sports ground.現(xiàn)在是下午4點,孩子們在操場上踢足球.

(3) 表示現(xiàn)階段正在進行而說話時不一定在進行的動作

We are working in a factory these days.這幾天我們在一家工廠工作.

They are compiling a dictionary.他們在編一本詞典.

(4) 在口語中表示主語計劃將要做的動作

They are leaving for New York tomorrow.明天他們將要動身前往紐約.

(5) 現(xiàn)在進行時與always等副詞連用時帶有感情色彩

He’s always quarrelling with others.他老喜歡跟別人吵架.

She is constantly worrying about her son’s health. 她不停地為她兒子的健康擔心著.

The boy is forever asking questions.那個男孩老是提問問題.

(6) 有的現(xiàn)在進行時句子和一般現(xiàn)在時同義。用現(xiàn)在進行時表示問者的關切心情

How are you feeling today? 你今天感覺如何？

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

Why are you looking so sad? 為什么你看起來這么愁眉苦臉的樣子呢？

(7) 有的動詞用于現(xiàn)在進行時表示“逐漸”的含義

Our study is becoming more interesting. 我們的學習變得越來越有趣了.

The leaves are turning red. 樹葉漸漸地變紅了.

Wait a moment， I am finishing my supper. 等一會兒，我的晚飯就要吃完了.

(8) “be”動詞的現(xiàn)在進行時。“be”動詞用于現(xiàn)在進行時表示說話者認為是短暫的、和平常不一樣的、甚至是偽裝的.

He is being foolish. 他在裝傻.

He is being honest. 他表現(xiàn)得特別老實.

I can’t understand why he is being so selfish.我不明白此時他為何如此自私.