should 放句首&provided 放句首 区别?
问题描述：
should 放句首&provided 放句首 区别?
答
should 只有在一般疑问句或者强调的时候才会放在句首.Should I drop by your office before I leave?provided 省略主语的时候都可以放在句首.Provided with the ingredients,he can cook anything you want.两者没有...