1.turn around 向后轉(zhuǎn)，轉(zhuǎn)身

例句：Mary turned around to copy her classmate's answers on the exam and was caught by her teacher.

瑪麗考試時(shí)回頭抄她同學(xué)的答案卻被老師抓個(gè)正著。

2.once… 有一次……

例句：Once I saw an injured motorcyclist lying in the street，but nobody came to help him.

有一次我看見一位受傷的摩托車騎士躺在路上，但沒人去幫他。

3.to one's dismay 令某人驚慌的是

例句：Jane awoke to find, to her dismay, she had missed her bus stop.

令簡(jiǎn)驚慌的是，她在公交車上醒來時(shí)發(fā)現(xiàn)坐過站了。

4.be sandwicked between 被夾在······中間

例句：I couldn't turn around to see who did it because I was sandwicked between two tall men.

我無法轉(zhuǎn)過去看是誰做的，因?yàn)槲冶粖A在兩名高個(gè)子中間。