請問 Having worked all day, I was dealy tired,and can never move on. 這句的最前面一句having worked all day 是用了什麼時態或是文法?是現在完成式嗎?無法理解...?

It is Absolute Construction=having+vp.p
=Language Note
=Intensifying Adjective(=past participle as adj)
=having complete "work for all day"= a verbal adj.
=Having worked all day,--------I was deadly tired.-------never moved on.!
=eg:-Having risen not any wages, he committed suicide !

原本完整為I have worked all day, ......因為兩句主詞一樣所以第一句改寫成分詞構句，而你說這是現在完成式是完全正確的唷^^只是有分詞構句的成分

這是「分詞構句」用來修飾述部，用「完成式」分詞表示時間比述部「早」。
分詞可分為「簡單式」（~ing/~ed) 與「完成式」(having ~ed) 兩種。另外及物動詞所衍生的分詞，還能有「主動」和「被動」的變化。
簡單式分詞的時間點與主要動詞「同時」，如：Romeo, believing that Juliet was dead, decided to kill himself.相信與決定是同時。
完成式分詞的時間點比主要動詞「早」，如：Having failed twice, he didn't want to try again.失敗比想要放棄早。

#過去完成式：[had + p.p.]
#[having* worked]文法不符吧。
● I had* worked all day. I was deadly tired and could not walk(move on).

是過去完成式哦~

Having worked all day, I was deadly tired, and can never move on.
工作了一整天, 我倦得要死, 再也動不了。

【Having worked all day.......】

個人愚見： V原動詞➕ ing ➕p.p., 這是「分詞構句」的省畧法，前段表示該動作發生「較早」。

原句：After I had worked all day, I was deadly tired, and can never move on.


另例: Having fired away all his best points, the speaker had no argument left.　
演講者拋出了他的所有最佳論據之後，連一個論據也提不出來了。

主詞去掉, 動詞表主動加ing, 行成分詞構句

謝謝您的回答! 可是我還有疑問,那為什麼句子中要用having+vp.p.的形式呢?