英文是有時態的語言，有過去現在未來的不同動詞表達模式，與事實相反的假設語氣則是因為與事實相反而只能用「不正常動詞時態」表達，急迫性語氣則表達迫切期望的事，但是因為只是期望而尚未真正發生，也是只能以「不正常動詞時態」表達。
應用：「不正常動詞時態」在應用上通常是不賦予時態，所以通常以動詞原型或以有急迫涵意的(should+動詞原型)表達。
以下是常見用以配合急迫語氣的動詞：
advise (勸告), propose (提議), ask, request (要求), recommend (推薦),
demand (要求), insist (堅持), suggest, It is essential (根本的) that,
It is important that…, It is necessary… (必須的), It is critical… (重要的),
It is imperative… (強迫的), It is vital… (非常重要的)….
The teacher demands that we be on time.
The teacher demands that we should be on time.
I insisted that he pay me the money.
I insisted that he should pay me the money.
I recommended that she not go to the concert.
I recommended that she should not go to the concert.
It is important that they be told the truth.
It is important that they should be told the truth.
I suggested that she see a doctor.
= I suggested that she should see a doctor.
lest (唯恐、萬一) = in case 常與should連用以表達急迫性語氣
He soon left lest he should see me.
= He soon left lest he see me.
He soon left in case he should see me.
唯一雲端虛擬教室，將想法全文輸入輸出訓練🎯，雲端專人訂正提供改善建議。
影片線上教學平台：Youtube教學頻道
提升國際競爭力 加入超凡遠距 。
無論您是(1)注重口說寫作的國高中生; (2)提升競爭力的英文老師; (3)努力成為各科雙語老師; 或(4)提升專業英語說寫能力的碩博生或社會人士。請洽客製化訓練課程詢問專線。
超凡遠距 