话题 do good to

话题 allow to do

话题 why to do

话题 need to do

话题 condemn to do

话题 volunteer to do

话题 stop to do

话题 idea to do

话题 ask to do

话题 see to do

话题 aim to do

话题 fail to do

话题 seem to do

问题 what we can to do sth是什么结构

We should do what we can to help the homeless people.what we can to do 是什么结构、什么成分呢？

问题 It is responsible of / for sb to do sth的用法疑问

...个问题是关于irresponsible 的用法：It is irresponsible of sb to do sthIt is irresponsible for sb to do sth参见：http://ask.yygrammar.com/q-26640.html我想请问一下，如果是 responsible 呢？怎么用？It is responsible of sb to do sthIt is responsible for sb to do sth我在词...