as if 后跟to do与 doing有何差别
as if to do 与as if doing有什么区别
get sth.to do 与 get sth.doing 有何差别
start doing 与start to do sth 有什么差别?
As if + doing 和 As if + to do 的区别
go on to do和go on doing的意思有何差别
1、continue to do与continue doing有何区别?
help to do ...与help doing ...有何区别.
Like to do后跟什么?Like doing后跟什么?
warn sb后跟to do 还是doing
stand后跟to do还是doing?
dedicate to后跟doing 还是do?
to后跟doing还是do如何判断?