observe sb to do/doing 区别
observe sb to do/doing 区别
notice sb to do/doing 区别
feel sb to do/doing 区别
send sb.to do 和send sb.doing区别
allow sb.to do和 allow sb.doing 的区别
rely on sb to do rely on sb doing 区别
see sb to do和see sb doing的区别?
teach sb.to do和teach sb.doing的区别
hate sb to do与 hate sb doing 区别
区别:keep sb doing /keep sb to do
get sb to do 和 get sb doing 区别
请问have sb.to do ,have sb.done,have sb.do,have sb.doing 的区别