can you help me with swimming.请解释一下为什么要用ing形式,以及一些关于help,和要加

can you help me with swimming.请解释一下为什么要用ing形式,以及一些关于help,和要加动名词等的知识点

介词with 后面要用名词 或者名词性的词 一般介词后都的动词都要加ing
关于动名词的用法,属于非谓语一类
非谓语分为 动名词 分词和不定式三种 其中分词又可分为现在分词和过去分词 这里要注意的是,动名词和现在分词在形式在是一致的,可是语法分类上是不同的.不过对于英语学习者来说,也可以简单地认为是一样的（当然这样的认为只能针对高中及以下的英语学习适用,若是严格来说,简单认为是一样的这样的认可是不正确的——这是要说明的）
你问及的动名词的用法 我简单给你说下吧
词的-ing形式相当于名词、形容词、副词等,也保留了动词的某些特征.
(1)作主语：
Talking is easier than doing.
It’s no use talking about it.
(2)作宾语：
He is afraid of being scolded.
I found it no use talking with him.
有些动词后面只能接doing.
如：admit, avoid, consider, delay, enjoy, escape, finish, imagine,
keep, miss, mention, practice, risk, stop, suggest等.
有些动词后面只能接to do.如：agree, decide, expect, hope,
long(渴望),manage, plan, pretend,
refuse, wish等.
有些动词后面接doing和to do 都可以,且意思差别细微,或看作
没差别.如：begin, start, hate, like, love, continue, refer等；
但另一类词差别很大.如：forget, remember, mean, try, regret等.
还有 go on; remind sb. of doing sth.(使人想起)和remind sb. to
do(提醒).另外,stop doing停止干；stop to do停下来去干某
事,to do是目的状语.
(3)作表语：
Seeing is believing.
The story is moving/exciting/interesting.
(4)作宾补：
I saw them coming across the road.
They had their lights burning all night long.
(5)作定语：
There is a swimming pool in our school.
China is a developing country.
(6)作状语：
Being ill, she went home.
Having finished their homework, they had a rest.
While reading the book, he nodded from time to time.
【注意】
1.动词-ing形式的逻辑主语有三种形式：
(1)doing前加物主代词.如：my doing；
(2)doing前加名词所有格.如：Tom’s doing；
(3)作宾语时doing前可加人称代词宾格.如：me doing.例如:
Mary’s coming late made Mr. Smith angry.
She didn’t mind his (him) crying.
2.否定式在其前面加not;完成式having done;被动式being done.
例如:
Not knowing what to do, he turned to his teacher for help.
Having finished their homework, they watched TV.
He had hoped to take his seat without being seen.
3.独立结构：
Weather permitting (If weather permits), we’ll have a sports meet
next week.
Weather being so fine (As weather is so fine), we have decided to
go on an outing.
There being no buses, we had to walk home.
4.with复合结构：
They slept, with the lights burning.
关于help的用法
1. help sb. to do sth. 帮助某人做某事. to 可省略
2. be of some/ no/ much help to sb. 对某人有些 / 没有 / 很有帮助.
3. help oneself （ to ）自用（食物等）.
4. help sb. into/ out of 搀扶某人进入 / 走出.

5. help sb. out 帮助某人克服困难,渡过难关、解决问题、完成工作.
6. with the help of 在……帮助下.
7. help sb. with sth. 帮助某人做某事.
8. help to do sth. 有助于做某事.
此外help sb (in)doing sth. in 可以省掉,表示 帮某人一起做某事
我在猜 你是不是想问 can't help doing sth,情不自禁做某事 关于doing的用法 呵呵
打字 整理很辛苦啊~~~希望对你有帮助