英语中会使用现在进行时来描述现在正在发生的事，常用的提示词有right now，now，today，以及at the
moment，让我们看看下面的例句，来跟这些提示词混个眼熟吧。
What are you doing right now?
She's reading in the garden at the moment.
They're not standing in the rain right now.
My friends and I are watching a film at the moment.
对于英语初学者而言，有个很容易混淆的概念是一般现在时与现在进行时的区别。
一般现在时用来表述每日发生的事情，而不是此时此刻正在发生的事。通常，一般现在时的句子中会出现usually，sometimes，often这一类的程度副词。(关于程度副词的知识可以戳这里了解哦~)
Alice doesn't have to get up early on Saturdays.
The boys play soccer on Friday evenings.
The teacher often shows us a video in class.
而现在进行时则表述的是此时此刻正在发生的事，同样的，让我们看一些例句加深印象。
She's studying hard for her final exam.
What are you cooking for dinner? It smells good!
They're aren't working right now. They're watching TV.
现在进行时还可以用来描述持续在做的事情以及未来的一段时间内要发生的事，比如：
We're having leftovers this evening.
What are you doing tomorrow afternoon?
She isn't coming on Friday.
She's learning the tennis this month.
在商务场合中，用现在进行时表示未来的情况更加常见，如：
We're having a meeting at six tomorrow.
I'm flying to Tokyo next week.
The CEO is giving a presentation next week.
现在进行时只能用于行为动词上。行为动词是描述我们动作的动词，状态动词是用于描述情感、信念、状态等等的动词，如hope，want，like，believe等等。
I hope to see him today. (正)
I am hoping to seeing him today.(误)
I want some ice cream right now.(正)
I am wanting some ice-cream right now.(误)
1.肯定句：be+doing
You're (You are) studying English at the moment.
She's (She is) planning a vacation in Hawaii.
You're (You are) not paying attention, are you?
They're (They are) waiting for the train.
2. 否定句：be+not+doing
I'm not (I am not) thinking about my vacation right now.
You aren't (You are not) sleeping at the moment.
He isn't (He is not) watching the TV.
They aren't (They are not) working this week.
