開口說英語（82）on the sly偷偷地

【實用會話句型】：~on the sly偷偷地

1. If you do something on the sly, you do it secretly because you should not be doing it.
如果你偷偷地做某事，你是秘密地做，因為你不應該做的。

2. The boy left classroom on the sly.
那男孩偷偷地離開了教室。

3. A man in black clothes drove your car away on the sly.
一位黑衣男子偷偷地開走了你的車子。

4. My sister is having an affair with John on the sly.
我妹妹和約翰偷偷地戀愛了。

【今日諺語】

Tastes differ.
各有所好。