【花 × 花】評論
The cleaning staff ______________ to work on the weekend should inform security guard by Friday noon.中譯:清潔人員必須在週末工作的話,應該在星期五的中午前通知保全。*staff (n.) (全體)職員,(全體)工作人員 → 有單、複數用法*have to 必須*by+時間 在...時間之前原句應為:The cleaning staff who have/has to work on the weekend should inform security guard by Friday noon.省略關係代名詞後,動詞+ing→ The cleaning staff having to work on the weekend should inform security guard by Friday noon.※簡易判斷是不是省略關代的用法我是從是前後句是不是都是完整的句子來看,一個基本句就是主詞+動詞The c...