fors的用法和樣例：
例句
- The child is dependent on his parents for support.
這個小孩靠他的父母養活。 - He shut himself away for a month to catch up on his academic work.
他與世隔絕一個月，力圖把功課趕上去。 - It is more necessary than ever for all of us to work hard.
我們大家比以往更需要努力工作。 - Would you like to try this jacket on for size, sir?
先生，你要不要試穿一下這件夾克衫，看看尺寸是否合適？
