introduce myself (吃饱了没事 各位看看有没有错句)

呵呵其实没有都是错的啦
I am a bachelor,（要分隔开） a sunshine man,I don't(不是doesn't）have any bad hobbies（hobby要复数）.Then about my interest,I like sneaker and playing basketball（调换一下,因为可以误解为play basketball & sneaker,但是没有play sneaker的）,of course,I like English(这句感觉很难受,语法没错但是实际上面有点怪),I believe everybody can（没助动词） be able to say "don't boast,man!" I shall say "Hey bitch It's turn!"
差不多这样就不错了,有些主要是看语感,有几句不知道为什么感觉怪怪的,就可能有点毛病的.你说的动名词可以做主语,这个是没错的,但是这个说talking about my interest,刚刚看到这里没be动词,或者一个Verb,那只能用about my interest了（才想的怎么读起来怪怪的）
加油加油!
well I would say your English is doing alright,but you need to improve some of your skills,especially using Verbs and be(am,is,are,was,were,been,being) then you will improve your skill a lot.By the way,the spelling of BASKETBALL(I think that's just a type mistake so it will be alright)
Good Luck,Keep Going and you will make a success