句中有must.反意疑问句该怎么用?
句中有must .反意疑问句该怎么用?
1. must作“必须”解释, mustn't作“不允许”解释时 They must clean the floor, mustn't they/needn't they? 他们必须擦地板,是不是? We must stay at home, mustn't we? 我们必须留在家里,是不是? We mustn't be late, must/may we? 我们不许迟到,是不是? <><><> 2. must表示推测时: They must be playing basketball, mustn't they? 他们肯定在打,是不是? 摘自 赵振才教授《初高中英语考点难点详解词典》 <><><> 在国内的考试中,通常被认为正确的答案为: Your brother must be anxious to know the particulars, isn't he? He must have arrived by air, didn't he? 当must表示猜测的时候,在反意疑问句中应该这样: a.当后跟的动词原形时,应当成一般现在时处理。 b.而当must后跟的是现在完成时,应当成一般过去时处理。