是不是一般 be done to do强调结果 be done doing
是不是一般 be done to do强调结果 be done doing
being done 和 be doing ;done ;doing ; be done ;to be done 的用法
to be done=doing?
怎么区分谓语动词,to do doing done 和to be doing to be done to have do
英语语法问题:Sb/Sth+be+过去分词+不定式(to do,to be done,to be doing..)
to be done 与 to doing
be done 和be doing done
to do →to be done to be doing to have done →to have been don
为什么有doing=to be done
need doing 和need to be done
there be...to do there be...doing(动名词、现分) there be...done 分别
do did does是不是可以直接做谓语 但done doing不能直接做谓语 have done be doing才