有读者问： 有这样一个句子：
(1)The talk...allowed her to make him a Swiss cheese sandwich and a pot of tea and begin dressing the turkey: salting, peppering, stuffing it with not quite stale enough bread but it'll have to do, ...
“it'll have to do”是什么意思？ 为何用将来一般时？
这是一现成说法，所以上下文虽皆是叙说过去，但仍不改变其时态。它的意思是“就是这样”， 其含意是： 火鸡肉所填塞的面包虽不很新鲜，但这样也就行了。作“行，可以”解的不及物动词do还有如：
(2)It will do .
(3)That won't do .
