英語begin是什么意思

　　I was beginning to think you'd never come.

　　我開始以為你是不會來了。

　　The pressure of work is beginning to get to him.

　　工作的壓力使他煩惱起來。

　　We began work on the project in May.

　　我們于五月份啟動了這項工程。

　　Work has begun on the construction of the new airport.

　　新機場的修建已經開工。