(取20分) what you waiting for 定 what are you waiting for ?

有分別
第1句有錯, What are you waiting for 先啱.
可能係好多人講果時, 用 (What"re you waiting for?) 所以無o左果 are 音.

~有分別
~第1句錯, What are you waiting for (is right)
~好多人係講果時, 用 (What"re you waiting for?) 所以無o左果 are 音. (American are lazy sometime...)

(2) is correct
(1). worng grammer. this sentance is missing a "verb".

(1) can never be correct because the present participle [waiting] cannot stand alone. if it's converted into [what you wait for], it can be correct in the following condition:

e.g. what you wait for is timing and luck. 你等待的正是時機和運氣

(2) is correct even it stands alone as a question. it has a complete sense when it alone stands. you can also twist it a little bit and make it as a clausal subject:

e.g. [what you are waiting for] is timing and luck. 你現在等待的正是時機和運氣
e.g. [what you are waiting for] is for the rain to stop 你在等待雨停下來.

it can also exist as a supplement:

e.g. This is exactly the bus [you are waiting for]. 那正是你要等的巴士.
e.g. He is not the man [you are waiting for]. 他不是你要等的那個男人.

要構成進行式必須有 (be) + 動詞ing，所以陣述可系：
You are waiting for (一啲嘢).
咁系咩呢，於是要用疑問詞 what：
What are you waiting for?

1. what you waiting for - 這句的結構是 : 疑問代名詞 + 名詞(主詞) + 名詞
2. what are you waiting for - 這句的結構是 : 疑問代名詞 + 動詞 + 名詞(主詞) + 名詞

所以第一句沒有動詞就不成一句句子了. 第二句才對呢!