HSK 5 grammar · adverb
可
可 — emphatic "really / do"
Pattern
+ + +
+ +
( ) can be left out · other words may come before, between and after
How it works
The adverb 可 adds emphasis to a statement, reinforcing feeling or warning: "really / certainly / do (be sure to)." It often ends with 了 or 呢 for exclamation, and 可要/可别 gives an earnest reminder.
Examples
你可来了,我们都等急了!
Nǐ kě lái le, wǒmen dōu děng jí le!
You're finally here — we were all anxiously waiting!
路上可要小心啊!
Lù shang kě yào xiǎoxīn a!
Do be careful on the way!
Related

See it in a story
In the app, 可 is underlined wherever it appears in the stories you read, and practised with sentences from them. Free.