又是Chinese English英语中没有这样用的,must表推测时只能用肯定形式(eg.If the lights were on, they must have been at home.如果灯亮着，那么他们一定在家)如果用否定形式,表示严禁做...一定不能干......(eg.You mustn't go out tonight.今晚你不许外出)
又是Chinese English英语中没有这样用的,must表推测时只能用肯定形式(eg.If the lights were on, they must have been at home.如果灯亮着，那么他们一定在家)如果用否定形式,表示严禁做...一定不能干......(eg.You mustn't go out tonight.今晚你不许外出)