重点讲解：
1. on duty 上班；值班；
There will only be a skeleton staff on duty over the holiday.
假期将只留必需的少数职员值班#C-_JYZ]SE!-n]fKls。
2. depend on 依靠；依赖；
Many adults still depend on their children to work the video.
很多成年人仍然要靠孩子来操作录像机eBFEHAXOR;^z~。
3. be admitted to 接受（入院）；收治；
A toddler was admitted to the emergency ward with a wound in his chest.
一个蹒跚学步的小孩因胸部受伤被送进急救室uS(9y~!+HWhy_。
4. as soon as 一…就…；
As soon as he gets here we're ready to go.
他一到我们就可以开始Ukb)WRtj88(Y5Ue^,I。