英文修改,也可以用更好的英语表达来代替,意思不能改变.

第一个句子
There must be《 a larger of 》 things to learn if I 《 was 》 enrolled into my ideal research field
第二个句子.
I《 wish to have an advance on > my English and,computer and to go on optical design independently.
第三句话
at the same time ,I will try to apply knowledge into social practice.
可以吗?

There will be many things to learn if I were enrolled into a research field I am interested in. My English level ,computer level should be improved and going on optical design independently.
At the same time ,I will try to put the knowledgeinto social practice.