重点讲解：
1. used to do sth. 过去常常；过去曾；
People used to come and visit him every day.
人们过去每天都来拜访他;mG@VcaM+i+。
2. spy on 秘密监视；
That day he spied on her while pretending to work on the shrubs.
那天，他假装在修剪灌木，秘密对她进行监视zFZ%[Y_vnSl5M~7;T。
3. lead to 招致；致使；导致；
Abuse can lead to both psychological and emotional problems.
虐待可造成心理和情绪上的问题aQ7Qz!#JuW!nth#02T。
4. be capable of 有…能力的；能够…的；
Every student in the class is capable of passing the exam.
班上每个同学都有能力通过这次考试+6bMrfe9mc!7mxc_&-V。