ATTACH DOCUMENT OR ATTACHED DOCUMENT

You may say:

1) Please refer to the attached document.
2) Please refer to the document as attached.
3) Please find enclosed the document for your reference.

1) Please get the attached document
2) Please get the attach document
第一句是對的, 因為document already attached.
但如你用find 或refer to instead of get則更正宗(smooth).

None.

第一句文法ok，但用錯動詞。應該用find唔係get。

Please find the attached document.

第二句就文法錯，get同attach都係動詞。若要用attach做動詞，就可以寫—I attach the document for your attention.

Hope it helps！

“attached” is an adjective in the first sentence. (correct)
“get”and“attach”both are verbs in the second sentence. (incorrect)
Should be changed as:
Please get the document.
or
Please attach the document.

Still, they all have different meaning.

1) Please get the attached document is correct

1) Please get the attached document is correct

因為文件是被夾附上的，這裡是 passive voice

1) Please get the attached document (correct)