HSK 3 grammar · particle
地
地 — adverbial marker
Pattern
+ +
( ) can be left out · other words may come before, between and after
How it works
地 (pronounced de) turns a description into a manner adverb that tells how an action is done. It sits between the modifier and the verb. Don't confuse it with 得, which links a verb to a following degree/result complement.
Examples
他高兴地笑了。
Tā gāoxìng de xiào le.
He smiled happily.
请慢慢地说。
Qǐng mànmàn de shuō.
Please speak slowly.
Related

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