A friend of ours are waiting for us这句对吗,要不要把are 改成is?这句主语是A

A friend of ours are waiting for us这句对吗,要不要把are 改成is?这句主语是A They are waiting for a friend .改成一般将来时态 a friend of 是加 ours 还是 us Are you tourisits?(改成单数句) Is your friend a tourist,too.(改成复数 they ,for ,bus ,the,waiting,are,a 连词成句 1.they are waiting for a taxi.改否定句 2.my mother is cleaning t Here is a bowl of noodles for you.句中的is为什么不可以是are? a friend of ours写成our a friend可以吗`ours换成us可以吗/为什么? None of us is a student None of us are students 两条都对吗 Are you waiting fou a bus?----yes,we are 这是什么句? lots of people are waiting for the bus同义句 A friend of --is waiting for them(they)