外研小学英语三起点 6 上 语法知识点总结*特殊疑问词及其用法1. How long 问，长度（metre/kilometre）答 How long is the Great Wall? It’s about six thousand seven hundred kilometers.2. How big 问，人口（people）答 How big is Beijing? Beijing’s got about fourteen million people . 3.How many 问，数...
