Swimming

My son, six and a half, has been swimming for three years. Since my family is located in the north of China, it is very cold in winter and unsuitable for swimming. He has been swimming for three years, which is equivalent to three summers. So far, he hasn't mastered swimming skills. Today, I decided to take him swimming. On the shore, I bought a swimming equipment for him, , including inflatable cuff, buoyancy float. He is particularly exciting when he put on the equipment, and scarcely wait to jump into the water. From the jump into the water to come out, we had spent about one hour and ten minutes.

Hi!  Great text , I have corrected a few things. But otherwise, fantastic writing!

Swimming

My son, six and a half, has been swimming for three years. Since my family is located in the north of China, it is very cold in winter and unsuitable for swimming. He has been swimming for three years, which is equivalent to three summers. So far, he hasn't mastered the skill of swimming. Today, I decided to take him swimming. On the shore, I bought some swimming equipment for him, , including inflatable cuffs (or water wings or inflatable armbands) , and a  buoyancy float. He is particularly excited when he puts on the equipment, and scarcely waits to jump into the water. From the time he  jumped into the water until he came out, we had spent about one hour and ten minutes there.