I don't know how to enlarge my vocabulary.
换成I have no idea how to enlarge my vocabulary.
She likes music very much.
换成She is fond of music.
However，a large amount of water has been wasted every day.
He teaches us to be selfless and try our best to help others.
I usually help my parents clean the house, beautify the yard and cook.
The summer holiday is around the corner.(即将来临)
This sentence doesn't make sense.(有意义，讲得通)
I was all at sea when I began my new job. (茫然不知所措)
first of all / at first / firstly首先
in the end / finally / eventually/ at last终于、最终、最后
as a result 结果
as a result of 因为
after all 毕竟
though / even though 虽然, 尽管, 纵然, 即使
despite / in spite of不管、不顾、虽然、尽管
however / but 然而、但是
As far as I’m concerned…就...…而言
As we all know, …正如我们所了解的，...…
In my opinion …依我之见，...…
all in all 总的来说/总而言之
in short / in a word 简而言之
in conclusion / in summery 总之、最后
好的开端是成功的一半：Well begun is halfdone.
善始善终：A good beginning makes a good ending.
孰能生巧：Practice makes perfect.
条条大路通罗马：All roads lead to Rome.
Xiao Ming was always late for school. His teacher didn’t know why.
改成 His teacher didn’t know why Xiao Ming was always late for school.
Mary is a girl in Class 1. She speaks English very fluently.
改成Mary is a girl in Class1, who speaks English very fluently.
The doctor arrived there in time.The boy was saved. It was not too late.
改成The boy was saved because the doctor arrived there before it was too late.
She didn't have a rest until she finished the work.
改成Not until she finished the work did she have a rest.
E、强调句的使用：it is + 强调部分+that (who)…
It was not until she took off her dark glasses that I realized she was a film star.
It was you who gave me the confidence.