Fusilli with zucchini and tomato sauce

I make this dish quite often. It won't fail and it is not complicated. Celery (the white cube kind) and basil make this dish perfect, but you don't have to run to the shop if you don't have them at home right now. Dried basil is also acceptable. Just as well as fusilli, you can use almost any type of short pasta (from my experience I'd say that conchiglie and orecchiete are pretty good for it).

Ingredients x2:
175 g fusilli or other short pasta
1 onion
1-2 cloves garlic
a small zucchina
3 tomatoes
70 g white celery
2 tablespoons olive oil
salt
pepper
basil
parmesan

Preparation:
Grind the garlic and chop the onion and celery finely. Fry them all on a frying pan with olive oil. Once they have got a bit of colour, add the zucchina that you previously have cut into a few centimeters' long sticks. Peel the tomatoes and remove their seeds. Cut the tomatoes into pieces and add them into the pan. Fry the vegetables on a rather hot heat for some three minutes, then lower the heat. Add salt and pepper according to your taste. As last ingredient add the basil and let the sauce still rest a few minutes on the cooker on low heat. Cook the pasta in lightly salted water and when 'al dente', remove the water. Set the pasta on plates and add the sauce. Serve with grated parmesan cheese.