•I've already asked him twice.我已经问过他两次了。

•The post comes twice daily (= two times every day).邮件每天来两次。

•There are twice as many houses in this area as there used to be.这个地区的房屋数量是从前的两倍。

•The state is at least twice as big as England.这个州至少是英格兰的两倍大。

•He's twice her size (= much bigger than she is).他的体形大她两倍。