[Grammar] Does "However" proceed with comma at the end of a sentence?

[mehdi 100]

Hi there.
Please help me with the punctuation of this sentence.

“It was raining. We went out however.”

I’m wondering if a comma should be placed before the adverb “however” or not.
I’ve been told that the structure of the sentence is very old and there are more academic alternatives like “It was raining. We, however, went out” or simple sentences like “It was raining. However, we went out.” “It was raining; however, we went out.”

What about this sentence: "Scientists believe that heat from the sun is an important new source of energy. They realize that solar technology is still in its infancy however."

Thanks for your attention.

 

[MikeNewYork]

I would put a comma before "however".

 

[probus]

Unlike Mike, I would not use a comma. And in your first example I strongly prefer "nevertheless" to "however."

 

[lotus888]

I wouldn't even end a sentence with "however." (ok, bad example)

“It was raining. We went out anyway."
“It was raining. However, we went out.”

"Scientists believe that heat from the sun is an important new source of energy. However, they realize that solar technology is still in its infancy."

If I had to end a sentence with "however", I would use a comma to separate it.
The Senate didn't pass the bill, however.

Here, "however" acts more like a "sigh" than an emphatic intro to a contrast in state of affairs.

http://stancarey.wordpress.com/2008/10/14/however/
Positioning
When you use however as a conjunctive adverb, be cautious about placing it at the end of a sentence or clause – especially a long one – where it delays the signal of contrast and can take the oomph out of whatever precedes it.


Here's a good piece on "however" by Grammar Girl.
http://www.quickanddirtytips.com/education/grammar/starting-a-sentence-with-however-right-or-wrong




--lotus