former和latter的区别？latter的用法？

former是以前或者前者的意思，而latter则是后来的意思，区别可以从以下例子看出：

How many girlfriend have you had, the one we saw yesterday was your former one, the one I have met today you said she is latter one. 你有过几个女朋友？昨天我们看到的是你的前一个，我今天遇到的你说她是后来的一个。

later 可作为副词和形容词，作为副词，有后来、稍后的意思，如： We are busy now, please call back later. 作为形容词，有更迟的，更后面的的意思，如： Later road we will wake together. latter 只能作为形容词，有后者的，较后的之意。

The latter half of his essay contains penetrating observations. 他的论文后半部有精辟的看法。