將來完成時結構、用法、定義詳細講解

 一、將來完成時的結構

shall/will have+過去分詞

二、將來完成時用法、定義詳細講解

1、表示將來某時之前或某動作發生之前已經完成的動作。
例句：
I shall have finished it by next Friday.到下週五我就把完成了。
She will have written it tomorrow at noon.明天中午她就會寫好了。
They will have been graduated from the university before he returns from abroad.在他從國外回來之前他們就會大學畢業了。

2、表示一個持續到將來某時或某動作發生之前的動作。
例句：
By next Monday,she will have studied here for three years.到下週一，她在這裏學習就要滿3年了。
The concert will begin at half past eight.They will have played half an hour when you arrive.音樂會將在8點半開始。你到達時，他們將已經演奏半小時了。

3、表示對現在或將來可能已經完成動作的推測，對過去實況的推測。
He will have arrived by now.他這是可能已經到了。
He is a somebody now.He will have forgotten his old friends.他現在是個要人了，可能把老朋友都忘了。
You’ll have heard that China will launch another spaceship.中國將要發射另一艘宇宙飛船，你可能已經聽說了。