found doing sth
found doing sth
found sb doing/do sth 到底怎么区分...
found she+doing\was doing
approach to sth /doing sth
after doing sth 还是 after doing sth?
翻译 prefer doing sth to doing sth
perfer doing sth to doing sth
用英语造句①have great fun②found sb doing sth③help sb to do④make s
he suggested doing sth
On doing sth
sb was doing sth
have trouble doing sth