1.He or she must be unhealthy yesterday,________ _________(反意疑问句)must be 的反意疑问句怎么变啊,那个must or be如何区分?2.If we don't move that bag,there may be an accident.__________move that bag,________there may be an accident.3.I want to make my trousers short by two centimeters.I want to _______my trousers _________by two centimeters.4.The bridge is three times as long as that one.The bridge is _________the ________of that one.5.改错It's a long and difficult word.I have forgotten which letter to begin.Which is wrong,and?forgotten?which ?or begin?6.There mustn't be anything wrong with my bike ,is there?(改错)
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1。wasn't he? 当陈述部分must表示“必须”时，疑问部分用mustn't当陈述部分must表示“有必要”时，疑问部分用needn't当must表示“一定”“想必”推测意义时，疑问部分不用must,而要根据陈述部分的不定式结构以及含义采用相应的动词形式例如：You must be hungry,aren't you? 2。We should......otherwise3。cut......shorter （我也不是很确定，sorry）4。four times......length5。begin---begin with6。正确。以上为个人看法，仅供参考。注：好象不是初中的英语吧？