Comma or not befor to

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hi,

Following are two related stories focusing separately on two key perspectives, to introduce some flows more simply:

Please guide me whether it is also correct (or even better) if the comma before “to” is left out.

Thank you.

Justin

2

The use of a comma, usually, alters the syntactic and semantic aspects. Could you widen the context of the given sentence so as to examine the scope. I do not get whether you mean the separated phrase as your own introduction of the subject or for the introduction of the two stories.

3

My question focused on the sentence in italic. It’s from a book I’m reading.
To make my question more clear, please see the two simpler examples:

  1. I’ll send you an email, to show you how much I love you.
  2. I’ll send you an email to show you how much I love you.

Is #1 correct? Is #2 has different meaning from #1?
Is the original sentence in my first post correct? What about removing the comma: “Following are two related stories focusing separately on two key perspectives to introduce some flows more simply: … ?”

4

To me, your 1) and 2) don’t relate to the original sentence. ‘Email’ in your examples doesn’t have any parenthetical/added elements and doesn’t need a comma to set it off.

As I see it, it better works this way: "Following are two related stories to introduce some flows…” No added elements, no need for a comma.
"Following are two related stories focusing separately on two key perspectives, to introduce some flows…” ‘…focusing separately on two key perspectives…’ is an added\ parenthetical element. I’d retain the comma.

5

Thank you. I’ve got the point.

6

They would mean the same but, as Eugene said, there need not be a comma. However, if there is an added element like ‘I’ll send you an email focusing on the depth of my love for you to show you how much I love you’, the comma is still not necessary. If at all it is to be used, then ‘I’ll send you an email, focusing on the depth of my love for you, to show you how much I love you’ would do well and be acceptable. (This is my view)

Similarly, ‘To show you how much I love you (,) I’ll send you an email focusing on the depth of my love for you’ can also be equally good semantically.