Prep. is only a short way of writing preposition on the page. You see it in dictionaries, grammar notes, and word lists, almost never in a normal sentence.

Prep. Prep. is只是 only a short way of writing preposition一種把 preposition 寫短的寫法 on the page在書面上 you see it你會看到它 in dictionaries, grammar notes, and word lists出現在字典、文法筆記、單字表裡 almost never in a normal sentence幾乎不會出現在普通句子裡

If a line says in prep., it is telling you the job of the word in grammar: in, on, at, of, with are prepositions — little words that sit before a noun and show place, time, or relation. Teachers and books use it to save space.

If a line says如果一行寫著 in prep.in prep. it is telling you它是在告訴你 the job of the word in grammar這個詞在文法裡的角色 in, on, at, of, with in、on、at、of、with are prepositions都是介系詞 little words小小的詞 that sit before a noun放在名詞前面 and show place, time, or relation表示地點、時間或關係 teachers and books老師和課本 use it用它 to save space來省空間

Though actually, you would not read it out as “prep” in class as if it were a word of its own — you would say “preposition.” It is a writing mark, like n. for noun or adj. for adjective.

Though actually不過實際上 you would not read it out你不會把它唸出來 as 'prep'唸成「prep」 in class在課堂上 as if it were a word of its own好像那是個獨立的字一樣 you would say你會說 'preposition'「preposition」 it is它是 a writing mark一個書寫符號 like n. for noun就像n.代表noun or adj. for adjective或adj.代表adjective

Spoken prep is a different shortening, of preparation: exam prep, prep work, prep school. That is not this entry. This prep. with the full stop is the grammar label.

Spoken prep口語的prep is a different shortening是另一個不同的縮寫 of preparation縮寫自preparation exam prep, prep work, prep school exam prep、prep work、prep school that is not this entry那不是這個詞條 this prep. with the full stop這個有句點的prep. is the grammar label才是這個文法標記