The structural particle “地”
In Chinese “地” (de) normally stands between an adjective and a verb and shows the manner in which the action is done.
It is usually rendered with an adverb:
“…-ly”, “in a … way”
Basic structure
Adjective + 地 + verb
Meaning: it states how the action was carried out.
Examples
过生日就要吃好吃的，还要高高兴兴地玩
过生日guò shēngrìcelebrate a birthday
吃好吃的chī hǎochī deeat good food
高高兴兴地gāogāoxìngxìng dehappily
玩wánplay
Here 地 states the mood in which the playing happens.
老师早早地到了教室
老师lǎoshīthe teacher
早早地zǎozǎo denice and early
到了教室dào le jiàoshìgot to the classroom
Here 地 shows when and how the arriving was done.
爸爸很快地吃完早饭，就去上班了
爸爸bàbaDad
很快地hěn kuài devery quickly
吃完早饭chī wán zǎofànfinish breakfast
就去上班了jiù qù shàngbān leand left for work
Here 地 states the manner in which breakfast was eaten.
Quick rule
Adjective + 地 + verb
Meaning: it states the manner or state in which the action was done.
高高兴兴地玩 — play happily
早早地到 — arrive nice and early
很快地吃完 — finish eating very quickly