to do与doing选哪个
to do与doing选哪个
used to do与be used to doing(单选
be determined to do与be determined to doing,哪个在英语中是正确的?
to doing与to do的区别
it's worthwhile to do 与 it's worthwhile doing 哪个对?是否有区别?
哪个短语对?:after doing ,after do ,after to do
important +to do/for do/for doing,哪个正确?
want to do 与 want doing区别
use to do与doing的区别
hope to do与hope doing
like doing 与like to do
watch (to) do 与watch doing辨析