“的” 一般修饰名词,放名词后。“地”则修饰动词,放副词后。
“的”is used for adjective,usually followed by a noun,for example" a big room"==" 一个大的房间”。 whereas,"地“ for adverb, by a verb, like " speak loudly"==”大声地说话“。 but nowadays, there's not big distinction between this two words, people sometimes use "的” for verbs and nouns.