keep to sth

• 履行诺言, 限制自己

keep to sth的用法和样例：

例句

1. Nobody knows much about him; he keeps himself (very much) to himself.
   谁都不太了解他，因为他很少与人来往。
2. Keep to the track the moor is very boggy around here.
   不要偏离车道--这一带沼泽地多。
3. I'd be grateful if you kept this information to yourself.
   这事你若能保密则不胜感激。
4. Things will only work out if we all keep to the plan.
   只有大家执行计划，事情才能成功。
5. She's old and infirm and has to keep to the house.
   她因年老体弱而足不出户。
6. Keep your opinions to yourself in future!
   你有意见留　自己用吧！