Why can be followed by doing?

Why can't be followed by doing. The correct usage is: why not do stn=why don't you do sth。

Usage of why 1: Why means 'why' and can be used as an adverb of interrogatives as well as as adverbs of relation.

It is also used as a conjunctive adverb that can lead to a noun clause.

Usage of why 2: why is used as an interrogative adverb to guide a special interrogative sentence.

or omitted special interrogative sentences, which indicate doubts, meaning "why"; It is followed by an infinitive without to.

It means "Why....", indicating that an action is unnecessary or meaningless.

Usage of why 3: why not has a triple meaning: it means "why not", it means to suggest, and it means to agree.

Why not is followed by the infinitive without to, which is used to make a suggestion and show "why not.".Why not can also be used to ask questions about the previous negative sentence.

Usage of why 4: Why is used as a relational adverb which means "why, for what's the sake, justification, or purpose". Leads to a definite clause.

It can be used alone after reason as a modifier.

Usage of why 5: Why as a connecting adverb, it can lead the subject clause.

You can also lead an object clause.

or predicative clauses.

There is no such thing as why not do stn=why don't you do sth

What is the meaning of why not do and how to use it, why not do...?The meaning that is usually expressed is a rhetorical tone, why not do something? It means that it is advisable to do something with admiration or opinion.

This is a fixed stool collocation for junior high school learning to express suggestions, the meaning of why not dwhy not do and how to use it.

why not do…?The meaning that is usually expressed is a rhetorical tone, why not do something? It means a suggestion or an opinion to do something.

This is the suggestion for learning to express in junior high school. A fixed collocation, why not do is equivalent to why don't you do can also be translated as why don't you go and do something? The former is the abbreviated form of the latter, and in the process of English learning, we must pay attention to this fixed collocation, why not can only use the original verb form of do, and cannot use the present participle form of doing, which is also a mistake-prone point in the exam.

When reciting, be sure to pay attention to the accuracy of the fixed collocation.

I don't have that kind of statement, I haven't seen it.