be found+doing还是to do?

be found+doing还是to do? be found to do和be found doing 有什么区别 i found it useless doing还是to do be addicted to do还是doing? 英语be going to do还是doing be worth to do 还是doing be worth to do 还是doing be surprised + to do还是doing be bound to do 还是doing be suggested to do还是doing be successful in +doing 还是 to do? be superior to +do还是doing? be indispensable to do还是doing be willing to do还是be willing to doing be equal to do还是be equal to doing be worth to do sth 还是be worth doing sth be scared to do sth还是be scared doing sth be busy doing还是be busy to dokuai