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Dear teachers.

I don't distinguish the meaning of those clearly.
For example:
- She's enjoying the job now that she's got more responsibility
- She's enjoying the job so that she's got more responsibility
Please give me an idea to understand them deeply. Thanks in advance.
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ocsenttdd- She's enjoying the job now that she's got more responsibility
- She's enjoying the job so that she's got more responsibility
There's a big difference between the two expressions. (The second one doesn't work in this context.)
She's enjoying the job because she's got more responsibility [now].

The first one has to do with time. You're comparing the old and the new. Something has changed. It may be better and it may be worse, (Or I guess you might see no significant difference.)
I'm feeling better now that spring is here!

The second one gives the reason for [doing] something.
I got them to lay me off so that I could collect unemployment.

I had to shovel the snow out of my driveway so that I could get my car out of the garage.

I have to work three jobs so that my kids can go to college.

The fasteners are crimped so [that] they won't come out.
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Thank you very much. I can understand the meaning of "so that", but I still confuse a little with the meaning of "now that".
For example: I don't want to go out now that the weather is very cold.
Is it mean that the weather was normal before, and it has just been cold?
ocsenttddFor example: I don't want to go out now that the weather is very cold.
Is it mean that the weather was normal before, and it has just been cold?
Yes. The usage implies that there's been a change: Now vs Then.