If you aren't careful,you will have an accident.句子中的aren't可以改成don't吗?为什么一定要有be动词呢
问题描述：
If you aren't careful,you will have an accident.
句子中的aren't可以改成don't吗?
为什么一定要有be动词呢
答
句子中必须有主语和谓语， you aren't careful 中are 是谓语，改成don't后就没有谓语了...
改的话也可以，改成 in you don't be careful, you will have an accident 加个be做谓语就没错了
答
you change it for this:if you do not be careful...
答
不可以
答
aren't 改成 don't 要加be
if you don't be careful........