2个英语词组的意思mistake A for B 和 have no choice but to do sth

2个英语词组的意思mistake A for B 和 have no choice but to do sth have no choice but to do sth.have nothing to do but do sth. 表示have no choice but之类的词组和用法 cannot choose but do&have no choice but to do 英语中 but后面加do 还是 to do 例子 we dont have a choice but to do 例子2 ……but to do sth,but后加to do 是不是只限用于I have no choice but to do have no choice but to do还是have no choices but to do? have no choice but to do 还是doing I have no choice but to do it. 关于I have no choice but to do do nothing but do 与have no choice but to do 与can't but do 关于cannot but do；can't help but to do;have no choice but to d