up with的用法

1、keep up with表示跟上，不落人之後，對…消息靈通，保持接觸。

2、用法：Many people were holding down three jobs just to keep up with the Joneses。

3、許多人同時做3份工作只不過是爲了和別人攀比。

4、Penny tended to work through her lunch hour in an effort to keep up with her work。

5、爲了把活兒幹完，彭妮常常午飯時間也要工作。