1.work up 逐步建立
The film works up to a thrilling climax.
这电影逐渐发展到令人惊悚的高潮
2. hang up 挂断(电话)
I have to hang up now.
现在我该挂线了。
3. gain v.获得
He has gained rich experience in these years.
这些年来,他取得了丰富的经验。
【语法用法】gain表示“获得”时,后可接双宾语。
Her talent and hard work gained her success as an artist.
她的天赋和努力使她获得了成功,成为一个艺术家。
4. opportunity n. 机会, 时机
【常用搭配】opportunity to do sth 做某事的机会
I want an opportunity to travel.
我想有个旅游的机会。
【语法用法】opportunity既可作抽象名词,也可作类名词。例:much opportunity,an opportunity和many opportunities。