重点讲解：
1. be short of 短缺的；不足的；
He had been short of exercise for a long time.
他长期缺乏锻炼。
2. attach to 赋予；认为…具有；为…所有；
I do not attach much weight to the theory.
我不十分重视这学说。
3. thanks to 幸亏；归因于；
Thanks to our hard work, we can fulfil the task on time.
托赖大家的努力，才能按时完成任务。
4. pay attention to 关心；注意；
You should always pay attention to personal grooming.
你应随时注意个人仪容。