英语：1.on10may ,LinTao was at home alone ,suddenly ,he heard someone shouting "fire,fire!"2.this morning i heard someone shouted"help ,help!"请问1,2两个句子意思一样,为什么第1个句子用shouting 而第2句用了shouted?3the 20-year-old boy called LinTao helped his neighbour out of a fire.请问helped out of 4.just at that moment the door opened and the teacher walked in.请问walked in能换成went in 5.doctor John walk to his hospital.同意句：doctor John （）（）（）to his hospital..

英语：1.on10may ,LinTao was at home alone ,suddenly ,he heard someone shouting "fire,fire!"
2.this morning i heard someone shouted"help ,help!"请问1,2两个句子意思一样,为什么第1个句子用shouting 而第2句用了shouted?
3the 20-year-old boy called LinTao helped his neighbour out of a fire.请问helped out of
4.just at that moment the door opened and the teacher walked in.请问walked in能换成went in
5.doctor John walk to his hospital.同意句：doctor John （）（）（）to his hospital.
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