for example,such as,like
for example一般只举同类人或物中的“一个”为例,作插入语,用逗号隔开,可置于句首、句中、句末；such as常列举同类人或物中的几个例子,不能穷尽,可和and so on连用,可分开使用such．．．as．．．；like表示列举,可和such as互换.例如：
1．Noise,for example,is a kind of pollution．举例说明,噪音就是一种污染.
2．China has many big cities,such as Beijing,Shanghai,Shenzhen and so on．＝China has many such big cities as Beijing,Shanghai,Shenzhen and so on．中国有许多大城市,比如北京、上海、深圳等等.
3．Some warm-blooded animals,like the cat,the dog or the wolf do not need to hibernate．有些热血动物,像猫、狗、狼不需要冬眠.