✔ 最佳答案
4. I am in the sixth form (or form 6) this year and I want to further my studies overseas.
Better: I am in the sixth form this year and I want to pursue further studies overseas.
Comment:Sixth form is the two final years at school in Britain for students between the age 16 and 18 who are preparing to take advanced level examination. No need to mention the word “study” in the first clause.
To refer to the work that a student does at a college or university, use "studies". After form 6, you obviously want to go to university.
Note:
I have just answered your other six questions with some comments. This question #4 is repeated here. Please refer to your previous posting.