do+but to do/but do的用法我只是不明白下面两句中为什么一句用to do 一句用do.eg1:I have nothing to do but cry.eg2:There was nothing for them to do but to remain silence.我只知道在but前面有do时后面跟do,但不明白为

but to do和but do的差别 do nothing but do 与have no choice but to do 与can't but do there is nothing to do but to do 还是there is nothing to do but do but to do和but for doing的区别 cann't ...but ...的句型的问题but 后面 什么时候加 to do什么时候加 do cannot but do和 can but do的区别? can do nothing but do 关于do...but do之类的语法是怎么样的?如i have no choice but to do have no choice but to do sth.have nothing to do but do sth. do+but to do/but do的用法我只是不明白下面两句中为什么一句用to do 一句用do.eg1:I have nothing to do but cry.eg2:There was nothing for them to do but to remain silence.我只知道在but前面有do时后面跟do,但不明白为 do nothing but good do anything but DO THOU BUT have done nothing but do 、done 、doing、to do? have nothing to do but do如何翻译 can't help but 后面加to do 还是do? have nothing to do but do sth还是doing sth could not but后面是do还是to do来着