Learn how to use 在, 正在, 快, 完, and 了 through the topic of phones and work.
Examples
我给他打电话。
I call him.
Examples
打电话。
To make a phone call.
Examples
请告诉我。
Please tell me.
他告诉了我一个好消息。
He told me a piece of good news.
Examples
他的工作很好。
His job is very good.
我在公司工作。
I work at a company.
Examples
他跑得很快。
He runs very fast.
我很快就要回家了。
I will be going home soon.
Examples
你的手机？
Your phone?
Examples
我正在准备晚饭。
I am preparing dinner.
你准备好了吗？
Are you ready?
Examples
这是我最喜欢的颜色。
This is my favorite color.
Examples
这里很危险。
It's very dangerous here.
不要去，危险！
Don't go, it's dangerous!
Examples
他在办公室工作。
He works in the office.
我们去办公室吧。
Let's go to the office.
Examples
我做完作业。
I finished the homework.
Examples
作业完成了。
The homework is done.
S + 在/正在 + 动词 + 宾语在 or 正在 is placed before the verb to indicate an action happening at the moment of speaking. 在 is more common in spoken language.
他在办公室打电话。
He is making a phone call in the office.
我正在准备工作。
I am preparing for work.
S + 快 + 动词 + 完 + 了This pattern expresses an action that is about to be completed. 快 and 完 combine with 了 at the end of the sentence to emphasize that something is almost finished.
我的工作快完成了。
My work is almost finished.
我快打完电话了。
I'm about to finish the phone call.
Two friends are talking about work over their mobile phones.
你现在在哪里？
Where are you right now?
我在办公室呢，我正在准备明天的工作。
I'm at the office; I'm preparing tomorrow's work.
你的工作快完成了吗？
Is your work almost finished?
快完成了，我最快今天能做完。
Almost. At the earliest, I can finish it today.
那很好！做完后，你用手机打电话告诉我吧。
That's great! When you're done, give me a call on your mobile phone to let me know.
好的。在办公室打电话最方便，但是用手机也可以。
Okay. Calling from the office is the most convenient, but using a mobile phone works too.