三单形式和ing形式:
packs，packingAlmost! I just need to pack my clothes.
差不多！我只需要打包我的衣服了。
All joiners will receive a welcome pack.
每位入会者都会收到一个迎新包。
The club will send a free information pack.
俱乐部将赠送一个免费的信息包。
I told him fair and square to pack his bags.
我直截了当让他收拾好行李走人。
We avoided a pack of journalists waiting outside.
我们避开了等在门外的一群记者。
