We will have to change the bulb; it's gone. 電燈泡爆了，我們需要換一個。
We will have an overland journey. 我們要做陸地旅行。
We will have some vocational training before graduation. 畢業前，我們會接受一些職業訓練。
I will have to consult my principals before I can give you an answer on that. 我必須同我的委託人磋商后才能就這個問題給你答覆。
You will have to wait and see. 你得等一等看。
By now, a rocket will have set off on its35 million mile trip to Mars and scientists must be waiting anxiously for the results. 此刻，一枚火箭可能已經出發，踏上飛向火星的3,500萬英里的旅程，科學家們一定在焦急地等待著結果。
The old currency will have been phased out by 1990. 舊幣分階段至1990年將全部禁止流通。
He postulated that a cure for the disease will have been found by the year 2000. 他推斷到2000年能研究出治癒該病的方法。
