We must be careful,a lion escaped from the zoo.这个句子不对吧?逗号前后都是完成的句子

问题描述:

We must be careful,a lion escaped from the zoo.这个句子不对吧?逗号前后都是完成的句子

两个句子,中间加一个并列连词for ,即是: We must be careful , for a lion escaped from the zoo.
这是个并列句,并列连词for 引导的并列句做补充说明。
eg: It must have rained last night, for the ground is wet now.

这个句子对的

We must be careful,bacause a lion escaped from the zoo 这样更好 ,原句也不算错 马马虎虎