The difference between why not doing it and why not doing it

The difference between why not do it and why not do it is:

1, the two sentences have different structures: why not+ subject+verb; Why not must follow the verb directly, and there can be no other elements in front of the verb.

2. The structure of why don can have temporal changes, such as past why don and perfect why haven. Why is there no change in time?

3. Why can't you make a sentence independently and why not?

Extended data:

These two sentences mean the same thing when expressing "suggestions", that is, "(why don't you) do ...? ",or" (you) should do ... ",such as:

Why don't you look through the reference books?

Why not turn to reference books?

"Why don't you read the reference book?" You should read reference books.

But why don't you do this? You can also ask questions as a question, such as:

Why didn't you watch the football match?

"Why didn't you watch the football match?"

References:

Baidu Encyclopedia-Why