雙語例句：
1、worried：
All he's worried about is his own hide.
他所擔心的'只是他自己的生命安全。
Why did you get worried about such a thing?
你為什麼對這樣一件事發愁呢？
2、worrying：
Equally worrying is the low level of learning.
同樣令人擔憂的是學習程度較低。
You should stop worrying about it.
你該不要再為此事擔憂了。
