1. It starts to rain, nevertheless , we continue to play football outdoors. . . .
First off, you must learn to use the
present progressive tense, "It is starting to rain," rather than the
present indicative tense, "It starts to rain." All five of your sentences are wrong because they're in the indicative rather than the progressive.
The difference is very difficult to explain, one of those things you have to learn by example rather than being taught. Basically, the present progressive is used for an action that is taking place
right now. "I am eating chicken" means that there is a chicken dinner on my plate and a piece of it is in my mouth,
right now.
Whereas the present indicative is used for an action that recurs. "I eat chicken" means that I am not a vegetarian, that chicken is one of the foods that comprises a major component of my diet, and that if you stop by my house any day at mealtime, there's a high probability that you will find me munching on a piece of chicken. But not
right now, because lunch time is over!
So if you are talking about a football game that is in progress
right now, and precipitation that is occurring
right now, the proper way to compose your sentence is "Although it is starting to rain, we are continuing to play football."
If, instead, you are making a general statement about your team's dedication to the sport, you can say "When it starts to rain, we continue to play football." This means that
any time it rains, you don't halt the game. This sentence contains no information as to whether you are playing football
right now, or whether it is raining
right now.
So, to go back to your question:
1. It is starting to rain, nevertheless we are continuing to play football outdoors.
Most Americans do not use the word "nevertheless" in casual speech. We would just say "but we are continuing..."
2. It is starting to rain. In spite of this we are continuing to play football outdoors.
Don't use the comma, make it two sentences.
3. It is starting to rain. We are continuing to play football outdoors, notwithstanding the bad weather.
Nobody uses the word "notwithstanding."
"We are continuing to play football outdoors
anyway.
4. It is starting to rain, nonetheless we are continuing to play football outdoors.
I won't say that
nobody ever uses the word "nonetheless," but you must be on the athletic field of Harvard University to hear that word during a football game. "Nevertheless" is very slightly more common, but still pretty unusual in this context. "But" is better. You could also say "yet," which implies that it's really strange for people to play football in the rain.
5. We are continuing to play football outdoors although it is starting to rain.
This is okay. I would probably say "even though" instead of "although" to stress the fact that my football team is crazier than yours so you'd better be careful when you play against us.
All of these sentences could be rearranged into the present indicative tense to describe a habit, attitude or conviction, rather than a specific event that is happening right now.
- 1. When it starts to rain, we nevertheless continue to play football outdoors.
- 2. When it starts to rain, we continue to play football outdoors in spite of the weather.
- 3. When it starts to rain, we continue to play football outdoors, the weather notwithstanding. (This is formal. You'd see it in writing but probably never hear it spoken.
- 4. When it starts to rain, we nonetheless continue to play football outdoors. (Again, this is formal. Most people don't use "nonetheless" in casual speech.)
- 5. We always continue to play football outdoors whenever it starts to rain.
Finally... I would omit the word "outdoors." Everybody knows that football is played outdoors, with a few rare exceptions such as the Houston Astrodome.
(I assume you mean good old American football. I have heard about a couple of strange foreign games that are also called "football," but I have no idea how, where or when they are played. We call them "soccer" and "rugby.")