is he do/dong sth?
is he do/dong sth?
hear sb dong sth/do sth
start dong 还是start to do sth
begin to do sth和 begin dong sth的区别?
dong sth 和to do sth的区别
have problem后接to do sth 还是dong sth
use sth to do sth和use sth for dong sth有什么区别
require dong 和require sb to do sth的区别
(be)get ready for sth./ dong sth./ to do sth.的 翻译,区别,用法
it is helpful to do sth it is helpful for doing sth it is he
he is sure to do sth 中 to do sth 做状语还是宾语
请问love to do等于like to 那like dong sth.=love doing sth.