更正在括号处注明!总共十处错误!
I (去掉have) received your letter just now.Don't worry about me.I'm getting on well with my research (works改成work) in the lab.But to my surprise,you say you will give up (learn改成learning) English.The reason (was改成is) that you have not done well in it recently and (加入that)you have lost (interesting改成interest).I'm afraid i can't agree with you.I know it is not easy to learn English,(and改成but) English is widely used in the world today and it will be (加入an) important tool in (their改成our) future work.Besides,it is becoming more and more important in our daily life.If you study hard,(去掉and) you will succeed.Do remember that where there is a will,there is a way.I'm looking forward to hearing good news from you.