1. I'd like to find a job which is related to my knowledge of English.
我想找一份与我英语知识相关的工作。
还能这样说：
I want to apply for a job that can enable me to use my English knowledge.
I am looking for a job which I can apply my professional knowledge.
应用解析：
relate to sb. the story of 向某人讲述……的经过；
relate...with 把……和……联系起来；
relate one's ideas 叙述自己的观点
2. A job with prospects of promotion is my top priority.
有晋升前景的工作是我的首选。
还能这样说：
My job objective is a position which can provide opportunity for me to rise.
I expect to be exalted in a position.
应用解析：
be on one's promotion 有希望提升；为找对象而洁身自爱
3. I want to collect some information about English editor.
我想搜集一些英文编辑方面的信息。
还能这样说：
I desire to gather some information which can help me with the English editor.
There is some information on English editor I need to collect.
应用解析：
abnomral information 异常信息；
adapted information 适应性知识；
additional information 附加说明，补充消息；
anti-dumping information 反倾销情报
4. I have the advantage of English word-processor capability.
我有英语文字处理能力方面的优势。
还能这样说：
I am good at processing English words.
I hold on to a dominant position on English word-processor capability.
应用解析：
to sb.'s advantage 对某人有利；
take advantage of sth. 充分利用