存在go on to on不是介词吗?

存在go on to on不是介词吗? 介词后可加动词不定式吗?除了go on to do外,介词后可以加动词不定式吗? 关于介词across和throughIs the street too narrow for the bus to go___?A.through B.across C.on D.in一般不是用go across吗?为什么答案是go through?go across一般什么时候用呢? the school bus 介词为什么用on呀i go to school on the school bus to go on to go on go on to go to后面加的是什么词?如 I often go to( ) my uncle on my holiday.是动词ing形式还是动词原型?那个 to 不是介词么 介词后面好像是要ing形式的吧? on a dark night,they took the sick boy to the hospital.表示在早上在晚上不是用介词in吗为什么这里用介词on啊 It is good_______people to go to work on foot.用适当的介词填空. Do you want to go to see your grandparents _______ me on sunday.(介词） work on to do和work on doing有这种说法吗?和go on to do ,go on doing you have to go on with your own life.为什么还要用with.不是有on吗 时间介词in on能问问 ：we are going to go to the zoo_two more days 中为什么填写的是in?in不是用在年月和 特定时间应该用ON啊 I go to school on foot because the school is quite ____my home.(介词填空） On Halloween,children go to ask for candies0____ door ___door.当中填介词 用适当的介词填空：we want to go on a school trip______the museum Sometimes I go to the shop ___on__saturday 这句话的介词用on 还是at