英语句子的表达是否正确,哪句错了,该怎么表达

这些句子看来是希望这种用法的：
1) He is a doctor,but he doesn't like it,because he thinks it's a busy and tiring job.
2) He is a doctor,but he doesn't like his job.
3) I think study (of ) interesting.
4) I think the student very interesting.
5) I think the doctor boring.
6) I think being a doctor is a boring job.
7) He thinks his job boring.
祝进步.

对的不说， 1.tired改为tiring4.I think a student is interested in study.5、6. doctor前加a

对于第4,5.
表达对特定人物的看法时, 要加the,特指某人.
如I think the student is very intersting.
I think the doctor is boring.
^_^

1 tiring job.
4)I think student is very interesting 这句是说我觉得学生很有趣
你是想表达这个意思吗？如果是的放在，那也没错
其他都没什么错