Prepositional is a grammar word. It describes things that belong to a preposition — a small word we put before a noun, a pronoun, or an -ing form to show place, time, direction, and similar relations.

Prepositional is a grammar wordprepositional是一個文法用語 It describes things that belong to a preposition它形容的是跟介系詞有關的東西 a small word we put before a noun, a pronoun, or an -ing form介系詞就是我們放在名詞、代名詞，或-ing形式前面的一個小字 to show place, time, direction, and similar relations用來表示地方、時間、方向，或類似的關係

In the trees in the park, in is the preposition, and in the park is a prepositional phrase. Other everyday chunks work the same way: on the table, at three o'clock, to school, from home, with a friend.

In the trees in the park在the trees in the park這句話裡 in is the prepositionin是介系詞 and in the park is a prepositional phrase而in the park就是一個介系詞片語 Other everyday chunks work the same way其他日常生活的片語也是一樣的道理 such as on the table, at three o'clock, to school, from home, with a friend像on the table、at three o'clock、to school、from home、with a friend

Teachers use prepositional when they point at that whole little chunk, not at a verb or an adjective. You do not need this word to buy a ticket; you need it to talk about English itself.

Teachers use prepositional when they point at that whole little chunk老師在指那整個小片語的時候會用prepositional這個字 not at a verb or an adjective而不是在指動詞或形容詞 You do not need this word to buy a ticket你買票不需要用到這個字 you need it to talk about English itself但要談論英文本身就會用到它

Though actually, students sometimes think prepositional is the name of the small word. The small word is the preposition. Prepositional only describes the words and phrases that go with it.

Though actually不過事實上 students sometimes think prepositional is the name of the small word學生有時候會以為prepositional是那個小字本身的名字 The small word is the preposition那個小字其實叫做preposition（介系詞） Prepositional only describes the words and phrases that go with itPrepositional這個字只是用來形容跟介系詞搭配的那些字和片語