help sb to do sth和help sb do sth没有区别，也就是说其中的不定式符号 to 可以省略。详细说明请看下面的一篇文章： 关于help sb do sth与help sb doing sth 一、关于 help sb do sth help sb do sth是大家比较熟悉的结构，通常也可说成help sb to do sth，其意为 “帮助某人做某事”，两者常可通用——即其中的不定式符号to可以省略，也可以保留。如： We helped her (to) find her things. 我们帮她找东西。 I helped him (to) repair his bike. 我帮他修自行车。 Mother helped me (to) do my homework. 妈妈帮助我做家庭作业。 Will you help me (to) choose myself a new coat? 请你帮我选件新大衣好吗？ Can anyone help me (to) fill in this tax form? 有谁能帮我填写税单吗? When she fell, a friend rushed to help her (to) get up. 她摔倒时，一个朋友冲上前把她扶起来。 二、关于 help sb doing sth help sb doing sth 也是正确的表达，它也表示帮助某人做某事，可视为 help sb in doing sth 省略介词 in 得来。如： I need contacts that could help in finding a job. 我需要能帮我找到工作的社会关系。 He helped her carrying her shopping home. 他帮她把买的东西提回家。 原文见：
http://www.yygrammar.com/Article/201009/1748.html