My confusion on English learning I had passed some examinations,and master more than 6,000 vocabulary ,which enables me to read articals and kinds of newspapers without much difficulty,but i feel confused and awkward that when I write or speak English,some time i find it dificult to illuminate or clarify one thing clearly and fluently... in my daily work I wrote Emails occasionally,and seldom speak in English.How can i handle this problem and speak English much better?I am looking for new job, is it necesary iand would be better f i take this factor into consideration?

What do you think about job-hopping? Do you think it is frequent job-hopping if one person change 3 jobs in 4 years?How to conquer this disavantage when he/she was looking for his/her new jobs?