A.K.A

先来看一个例句：

James Brown, A.K.A "the Godfather of Soul," is one of my musical heroes.

詹姆斯·布朗，又被成为“灵魂教父”，是我的音乐偶像之一。

A.K.A 是“又被成为：又名 also know as”的缩写

那么这句话可以改成：

James Brown, Also know as "the Godfather of Soul," is one of my musical heroes.

etc

例句：

We talked about the contract,payment,etc.

我们就合约、付款方式等等进行了讨论。

Extreme skaters perform jumps, spins, flips, etc.

极限滑板运动员能做跳跃、旋转、空翻等动作。

etc 是拉丁语 “et cetera”的缩写，意思是“等等/诸如此类”，同“and so on”。

这两句话可以写成：

We talked about the contract,payment,and so on.

Extreme skaters perform jumps, spins, flips, and so on.

e.g

例句：

The Summer Olympics is composed of a variety of sports (e.g., gymnastics, swimming, and tennis).

夏季奥运会由多个运动项目组成（比如体操、游泳和田径）。

e.g. 是拉丁语“Exempli gratia”的缩写，意思是“比如/打比方”，同“such as”、“for example”。

这一句可以改写成：

The Summer Olympics is composed of a variety of sports (such as gymnastics, swimming, and tennis).

The Summer Olympics is composed of a variety of sports (for example， gymnastics, swimming, and tennis).

i.e

例句：

Only one city, i.e., London, has hosted the Summer Olympics three times.

只有一个城市，就是伦敦，举办过三次夏季奥林匹克运动会。

i.e是拉丁语“id est”的缩写，是“具体是指”、“详细地说”的意思，同“that is”、“specifically”、“namely”。

因此这句话可以改成：

Only one city, that is London, has hosted the Summer Olympics three times.

Only one city, specifically London, has hosted the Summer Olympics three times.

Only one city, namely London, has hosted the Summer Olympics three times.