错误：I happy to have a picnic with you.
正确：I am happy to have a picnic with you.
错误：She are a good friend of mine.
正确：She is a good friend of mine.
错误：Although I have no work experience when I was a teenager, I always dreamed about having a job.
正确：Although I had no work experience when I was a teenager, I always dreamed about having a job.
错误：None can negative the importance of money.
正确：None can deny the importance of money.
错误：I was able to raise my TOEFL score by studying hard and I read lots of books.
正确：I raised my TOEFL score by studying hard and reading lots of books.
错误：Since I want to go to a good school, therefore I am trying to raise my test scores.
正确：I am trying to raise my test scores because I want to go to a good school.
I am trying to raise my test scores in order to go to a good school.
错误：I would like to discuss about something important that you mentioned about to me during yesterday.
正确：I would like to discuss something important that was mentioned yesterday.
错误：Nowadays, people are crazy pursuing to be excellent.
正确：Nowadays, people are crazy about excellence.
错误：There are many ways we get to know the outside world.
正确：There are many ways for us to learn about the outside world.