■ help sb. with sth 表示“帮助某人做某事”，help sb. with sb.'s homework 本义是“帮助某人做作业”，也可以表示“辅导某人做作业”。
完成作业 finish one's homework
A：Haven't you finished your geography homework yet?
你还没有做完你的地理作业吗？
B：No. I'll finish it before supper.
没有。吃晚饭前我会做完的。
geography /d?i??ɡr?fi; d?i?ɑ?ɡr?fi/ n. 地理；地理学
交作业 hand in one's homework
A：I want you to hand in this homework on Friday.