keep to sth的用法和樣例：
例句
- Nobody knows much about him; he keeps himself (very much) to himself.
誰都不太了解他，因為他很少與人來往。 - Keep to the track the moor is very boggy around here.
不要偏離車道--這一帶沼澤地多。 - I'd be grateful if you kept this information to yourself.
這事你若能保密則不勝感激。 - Things will only work out if we all keep to the plan.
只有大家執行計劃，事情才能成功。 - She's old and infirm and has to keep to the house.
她因年老體弱而足不出戶。 - Keep your opinions to yourself in future!
你有意見留 自己用吧！
