进来帮我看下英文句子有没错``另外给点建议``谢谢

我来改下吧
hello,every one,my name is xxx . i come from xxx .THE hot （形容词可以提前）summer is coming NOW . swiming and play ping-pang is my hobby. i am good at PLAYING computer . i like to buy （去掉the）book（S去掉）on the internet. because of the price is （少了个主语 价钱）cheap.

还有就是你的意思很不明朗呀 做自我介绍？
大家好，我是XXX，我来至XXX，炎热的夏天马上就要来了。游泳和乒乓是我的兴趣，我擅长电脑，我喜欢在网上买书，因为价格便宜。 （介绍这个怎么跟炎热的夏天扯上了）

Hello everyone, My name is XXX. I come from xxx
This summer is nearly coming, a little bit hot, right?
I love swiming and playing ping-pang. Also I am good at cumputer. Sometimes I buy books on the internet, because they are cheaper.

rubbish

Everybody is good, I call XXX, I from XXX

Hello,everyone,My name is xxx,I come from xxx,Summer is coming ,so it's very hot now.I am interested in playing ping-pong and swimming .
I am very good at computer ,I'd like to buy the books from the net because of the cheap price.

Hello everyone, my name is xxx and I come from x