呃 有的话我再帮你写有的有的!!!!!!呃，不好意思我想问inf 是什么？是不定式infinitive的缩写，指的是这个动词或者词组后要用不定式。yesterday I was watching TV while the doorbell was ringing.I walked to the door but suddenly I found someone had came into my house.i was scared and i could have gone to call the police on phone but unluckily my phone had been repairing outside these days.i do not know whether he would do something to hurt me.如果没理解错，这样应该可以了