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緊迫性不與具體的時間狀語連用,常與 when 一起連用 I was about to go out when the telephone rang. 2. be to do sth 表示按計劃、安排將要發(fā)生的動作(常用于新聞、廣播、報道、官方計劃或決定等) The president is to visit China later this year . 3. 某些瞬間動詞現(xiàn)在時和進(jìn)行時表示按計劃即將發(fā)生的動作,如動詞 e , go , leave , arrive , start , stay , move 等 She is leaving for Shanghai tomorrow. 強(qiáng)化訓(xùn)練 : 1. What is the terrible noise? The neighbors ________ for a party. A have prepared B are preparing C prepare D will prepare 2. The house belongs to my aunt but she ___ here any more. A hasn’ t