l'll come on condition that my sister is invited ,too请翻译这句话

l'll come on condition that my sister is invited ,too请翻译这句话 这句话怎么翻译?He was allowed to swim on condition that he kept nea that is my sister on (the) condition that These is my sister.这句话对吗? I'll let you borrow it on one condition .这句话是对的?不是有两个动词了吗 条件是 on condition that ,on the condition that这两个那个是对的 l __ is that girl in the photo ..that is my sister Lily 填空 l can not leave my sister alone.she is too young的同义句 l'm glad that you'll come to learn chinese.Chinese is very__ my sister is too young to _____berself A.wear B.put on C.dre 英语小练习My sister is too young.She can't put on her clothes by