keep to sth的用法和样例：
例句
- 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。 - Keep to the track the moor is very boggy around here.
不要偏离车道--这一带沼泽地多。 - I'd be grateful if you kept this information to yourself.
这事你若能保密则不胜感激。 - 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。 - She's old and infirm and has to keep to the house.
她因年老体弱而足不出户。 - Keep your opinions to yourself in future!
你有意见留 自己用吧！
