She is crying she cry都对吗?句意一样吗?

She is crying.正确,意思是,她正哭呢.（说话的时候她正在哭.）
She cry.不正确,这里的cry用于第三人称,而且是现在时,应该是 She cries.她哭.使用时一般有前提,如：
1）孩子饿了就哭.The baby (she) cries when she is hungry.
2）她不会一声不响,她会大叫的.She won't keep silent.She cries instead.(也可以说 She would cry instead.) 一般现在时用来陈述一个经常发生的现象、事实,等等.