老师,您好!请教一道关于介词 in / of 选用的题目:Welcome to our store. We have handbags _____ different shapes _____ different colours.A.in; in B. in; of C. of; of D. of; in 答案是B。为什么是选B ? 其他...
我在国内网站上搜索到下面的话:per和every只有在部分比率表达时,才可互通:once per second, once every second. 每一秒一次。但在不是"每一"的情况下,per 还是不可以用在句子中:once every three seconds 3秒一次once every five minutes 每5...
文章大意为发展中国家性别歧视,其中一句:Deep discrimination against women creates a firm force that keeps girls from living up to their full potential.It also leaves them victims___to____ severe physical and emotional harm.空格部分的介词为什么要填to而不能是if?