help这个词比较普通，但却是考试的高频词汇，下面说说help的用法。
1. help sb. to do sth. 帮助某人做某事。
Can you help me to learn English ? 你能帮助我学英语吗？
I can't help you to lift this stone. 我不能帮你搬这块石头。
2. be of some/ no/ much help to sb. 对某人有些 / 没有 / 很有帮助。
This book is of great help to me. 这本书对我很有帮助。
Is this magazine of any help to you ? 这本杂志对你有些帮助吗？
3. help oneself ( to )自用(食物等)。
Help yourself to the fish. 请随便吃鱼。
Please help yourself to some pork. 请随便吃点肉。
4. help sb. into/ out of 搀扶某人进入 / 走出。
He helped the patient out of the hospital. 他搀扶病人走出了医院。
Can you help the patient into the hospital ? 你能搀扶病人进医院吗？
5. help sb. out 帮助某人克服困难，渡过难关、解决问题、完成工作。
When I'm in trouble, he always helps me out with money. 每当我处境困难时，他总是用金钱帮助我渡过难关。
Please help me out with this problem. 请帮我解这道试题。
6. with the help of 在……帮助下。
With the help of her, he found his lost child. 在她的帮助下，他找到了失踪的小孩。
7. help sb. with sth. 帮助某人做某事。
Please help me with my French. 请帮我学法语。
Can you help him with this work ? 你能帮助他完成这项工作吗？
8. help to do sth. 有助于做某事。
This program helps to improve our English. 这个计划有助于我们提高英语成绩。
His speech helps to understand the policy. 他的演讲有助于理解这个政策。
1、help sb (to) do sth：to可以省略
2 can't/couldn't help (to) do sth. 不能帮忙做。
Cant/couldn't help doing 情不自禁做。
Cann't help but do sth. 不得不做。
3、can’t help to do sth与can’t help doing sth例题解析
He knows nothing about it, so he can’t help _________ any of your work.
A. doing
B. to do
C. being doing
D. to be done
【分析】此题答案应选B。比较以下结构：
can’t help to do sth = 不能帮助做某事
can’t help doing sth = 禁不住做某事，情不自禁地做某事
I can’t help to do it. 我不能帮忙做这事。
He couldn’t help to wash the clothes. 我不能帮忙洗衣服。
She couldn’t help smiling. 她禁不住笑了起来。
She couldn’t help envying Helen. 她不由得不妒忌海伦。
We cannot help being impressed by their zeal. 我们不由得不被他们的热情感动。
英语有时还可说can’t help somebody doing something不能使某人不做某事。如：
I couldn’t help him saying that. 我不能让他不这样说。
We couldn’t help them seeing us. 我们无法让他们不看到我们。
She could not help the tears of rage rolling down her face. 她止不住她愤怒的眼泪顺着面颊流下来。
又如下面一题，答案也是 B：
She can’t help _________ the house because she’s busy making a cake.
A. cleaning
B. to clean
C. cleaned
D. being cleaned
While shopping, people sometimes can’t help _________ into buying something they don’t really need.
A. to persuade
B. persuading
C. being persuaded
D. be persuaded
此题应选C，句中的 can’t help 意为“禁不住”(注意根据句意用被动形式)。