问题 help to do sth 与 help

2011 年的湖南高考英语的 Part IV 中有这样一句话： Some can help studying for tests, explaining a lesson, and doing homework. 请问这里为什么用 help doing sth 呢？为什么不用 help to do sth 句式呢？

问题 go on doing sth的句法分析

如何分析 go on doing sth 的句法功能，其中的 doing sth 是宾语还是状语，如果是状语，它是什么状语？比如下面一句，stitching 是什么成分？She nodded, smiled, and went on stitching. 她点了点头，笑了笑，又继续缝衣服。

问题 and的连接和to do 连接的问题

People who help doctors and look after patients are called nurses.此句中and 可以换成 to do 么？也就是help sb to do  在意思不变的情况下可以互换么

问题 do so with是什么意思

Wal-Mart says it's working with consumer-product manufacturers to trim their packaging and will reward those that do so with prime real estate on the shelves.请问这句活后半段该如何理解呢，do so with 是表“这样做..."的意思吗

话题 to do宾补

话题 so do+主语

话题 do与make

问题 what is wrong with the machine是陈述语序吗

As nobody here knows what is wrong with the machine，we must send for an engineer to handle the problem. knows 后的从句 what is wrong with the machine 为什么不用陈述语序？

问题 The more...,the more...句式的变体

...是词，并不是一个从句一个主句的形式，这种表达是省略后的形式，还是固有用法呢？the stronger the taste of the coffee中the stronger与the taste of the coffee算是什么关系呢？

问题 怎么判断中心词

...词。这种结构：中心词是哪个？我个人感觉不是抽象名词后的X to X 时间量词。比如：within 10 to 20 seconds of smile ！这好像有2种理解：第一种，微笑后10—20秒内。第二种：令人微笑的10—20秒（指10秒前他不微笑）。还是说要根据上...

问题 can't help doing用法

请问该句型中的doing的时间是已做还是正在做还是将要做？

问题 to do做后置定语

Many people have given up their responsibilities to finish the work. 老师，这句话用to do做responsibility的后置定语对吗？

问题 choose to do sth(愿意做某事)

网上有人说：choose to do sth. 的字面意思为“选择做某事”，其实是想表达“愿意做某事”，还有以下一些短语：be glad to dobe voluntary to dobe ready to dobe prepared to do请教各位专家老师，不知道这种说法是否正确？

问题 be busy with doing sth的搭配对吗

通常是说：be busy with sth, be busy doing sth请问是否可以说：be busy with doing sth 谢谢！

问题 分析：It has nothing to do with me.

It has nothing to do with me.to do在这里做主语？那 with 呢？