極需答案　 you are taller than I

You are taller than me 或 You are taller than I?

其實兩者皆可.
不過You are taller than I若要很正式的說應該是You are taller than I am, 衹是大部分的人都省略了後面的am.

下面這一段節錄自文章Less wrong than you think, 譯:(這些失誤)沒你想的那麽嚴重啦!>, 內容正是關於你提出的這個問題. 裏面有一段講到<...若你不想得罪那些完美主義者, 儘管老老實實地用 taller than I (am), 但若你自問不是純英派語言權威的話, 那丟掉那個am又何仿? 反正我也能明白你要說的是什麽...>

<An older dispute in the fun-with-implied-words genre involves than. Are you taller than I, or are you taller than me? Answer: Both. That's how short I am.

If you don't want to risk angering the purists, go ahead and be taller than I (am). But if you're a regular old tall person and not a tall professor of English, you probably didn't mean to imply the word am. You meant to say you're taller than me, and you're right. I don't mind being treated as an object.>

Let me put it this way,
--> He is tall. I am tall.
--> He is taller than I (am).
說明: 比較的兩者，主詞應該是同位格!

(多年前詢問過外國朋友，他說 ...than me. 也可以。在越來越懶惰的現代人口語使用下，已經約定成俗了)

英文的3態!!
I MY ME
你比我高
應該是第2句 yoe are taller than "me".
這比較正確!
要用I的時候通常都在句子的前面當主詞的時候會用到

一般用I的情況是說
Mary and I are going out....

但是現在
You are taller than me 才是正確的