【急!was difficult going to work,为什么用going而不用 to go
【急!was difficult going to work,为什么用going而不用 to go
at that age it was difficult going to work and watching my friends run off to swim or play.It is difficult 难道不应该是加 to do 为什么这里用了doing形式!如果真正的主语是going to work and watching,那么这种英语语法知识叫什么?it形式主语?