这句话语法有问题的哦.正确的应该是：
after a half year of study,i found (that) i am not intersted in that course and i cannot stop loving business.
括号中的that 在句子中可做宾语成分,所以可以省略掉.and 引导的并列句中,前后都应该是并列的,但是前面是be动词,而后面是情态动词,所以哦.
stop +Ving.