He always help his classmate with Math.

问题描述:

He always help his classmate with Math.
对吗可以用with吗

不对,首先主语是第三人称单数,动词help要用+s
词组help sb.with sth.帮助某人做某事,用with是对的
句子应该是:He always helps his classmate with Math.
意思:他经常帮助他的同学做数学